990977586 has 64 divisors (see below), whose sum is σ = 2133686016. Its totient is φ = 306028800.

The previous prime is 990977567. The next prime is 990977591. The reversal of 990977586 is 685779099.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2149396 + ... + 2149856.

It is an arithmetic number, because the mean of its divisors is an integer number (33338844).

Almost surely, 2^990977586 is an apocalyptic number.

990977586 is an abundant number, since it is smaller than the sum of its proper divisors (1142708430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990977586 is a wasteful number, since it uses less digits than its factorization.

990977586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947.

The product of its (nonzero) digits is 8573040, while the sum is 60.

The square root of 990977586 is about 31479.7964732938. The cubic root of 990977586 is about 996.9834381713.

The spelling of 990977586 in words is "nine hundred ninety million, nine hundred seventy-seven thousand, five hundred eighty-six".