977904 has 30 divisors (see below), whose sum is σ = 2737176. Its totient is φ = 325920.

The previous prime is 977897. The next prime is 977923. The reversal of 977904 is 409779.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3252 + ... + 3539.

2⁹⁷⁷⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

977904 is an abundant number, since it is smaller than the sum of its proper divisors (1759272).

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

977904 is a wasteful number, since it uses less digits than its factorization.

977904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6805 (or 6796 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 977904 is about 988.8902871401. The cubic root of 977904 is about 99.2579742634.

It can be divided in two parts, 977 and 904, that added together give a palindrome (1881).

The spelling of 977904 in words is "nine hundred seventy-seven thousand, nine hundred four".