Declension table of ?ṣaṣṭisahasra

Neuter	Singular	Dual	Plural
Nominative	ṣaṣṭisahasram	ṣaṣṭisahasre	ṣaṣṭisahasrāṇi
Vocative	ṣaṣṭisahasra	ṣaṣṭisahasre	ṣaṣṭisahasrāṇi
Accusative	ṣaṣṭisahasram	ṣaṣṭisahasre	ṣaṣṭisahasrāṇi
Instrumental	ṣaṣṭisahasreṇa	ṣaṣṭisahasrābhyām	ṣaṣṭisahasraiḥ
Dative	ṣaṣṭisahasrāya	ṣaṣṭisahasrābhyām	ṣaṣṭisahasrebhyaḥ
Ablative	ṣaṣṭisahasrāt	ṣaṣṭisahasrābhyām	ṣaṣṭisahasrebhyaḥ
Genitive	ṣaṣṭisahasrasya	ṣaṣṭisahasrayoḥ	ṣaṣṭisahasrāṇām
Locative	ṣaṣṭisahasre	ṣaṣṭisahasrayoḥ	ṣaṣṭisahasreṣu

Compound ṣaṣṭisahasra -

Adverb -ṣaṣṭisahasram -ṣaṣṭisahasrāt