977654331 has 12 divisors (see below), whose sum is σ = 1422476952. Its totient is φ = 647011296.

The previous prime is 977654303. The next prime is 977654339. The reversal of 977654331 is 133456779.

977654331 is a `hidden beast` number, since 9 + 7 + 76 + 543 + 31 = 666.

It is not a de Polignac number, because 977654331 - 2⁵ = 977654299 is a prime.

It is a super-2 number, since 2×977654331² = 1911615981846115122, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (977654339) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395221 + ... + 397686.

It is an arithmetic number, because the mean of its divisors is an integer number (118539746).

Almost surely, 2^977654331 is an apocalyptic number.

977654331 is a deficient number, since it is larger than the sum of its proper divisors (444822621).

977654331 is a wasteful number, since it uses less digits than its factorization.

977654331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793050 (or 793047 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 977654331 is about 31267.4644159068. The cubic root of 977654331 is about 992.4952634882.

The spelling of 977654331 in words is "nine hundred seventy-seven million, six hundred fifty-four thousand, three hundred thirty-one".