977685867 has 6 divisors (see below), whose sum is σ = 1412212932. Its totient is φ = 651790572.

The previous prime is 977685851. The next prime is 977685893. The reversal of 977685867 is 768586779.

It is not a de Polignac number, because 977685867 - 2⁴ = 977685851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (977685847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54315873 + ... + 54315890.

It is an arithmetic number, because the mean of its divisors is an integer number (235368822).

Almost surely, 2^977685867 is an apocalyptic number.

977685867 is a deficient number, since it is larger than the sum of its proper divisors (434527065).

977685867 is a wasteful number, since it uses less digits than its factorization.

977685867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108631769 (or 108631766 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The square root of 977685867 is about 31267.9687060097. The cubic root of 977685867 is about 992.5059349471.

The spelling of 977685867 in words is "nine hundred seventy-seven million, six hundred eighty-five thousand, eight hundred sixty-seven".