977880880 has 40 divisors (see below), whose sum is σ = 2372428512. Its totient is φ = 374145024.

The previous prime is 977880853. The next prime is 977880887. The reversal of 977880880 is 88088779.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (977880887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263889 + ... + 267568.

Almost surely, 2^977880880 is an apocalyptic number.

It is an amenable number.

977880880 is an abundant number, since it is smaller than the sum of its proper divisors (1394547632).

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

977880880 is a wasteful number, since it uses less digits than its factorization.

977880880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531493 (or 531487 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 55.

The square root of 977880880 is about 31271.0869654382. The cubic root of 977880880 is about 992.5719202494.

The spelling of 977880880 in words is "nine hundred seventy-seven million, eight hundred eighty thousand, eight hundred eighty".