977997700 has 18 divisors (see below), whose sum is σ = 2122255226. Its totient is φ = 391199040.

The previous prime is 977997677. The next prime is 977997721. The reversal of 977997700 is 7799779.

It can be written as a sum of positive squares in 3 ways, for example, as 242611776 + 735385924 = 15576^2 + 27118^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4889889 + ... + 4890088.

Almost surely, 2^977997700 is an apocalyptic number.

It is an amenable number.

977997700 is an abundant number, since it is smaller than the sum of its proper divisors (1144257526).

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

977997700 is a wasteful number, since it uses less digits than its factorization.

977997700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779991 (or 9779984 counting only the distinct ones).

The product of its (nonzero) digits is 1750329, while the sum is 55.

The square root of 977997700 is about 31272.9547692571. The cubic root of 977997700 is about 992.6114436846.

The spelling of 977997700 in words is "nine hundred seventy-seven million, nine hundred ninety-seven thousand, seven hundred".