977690420 has 48 divisors (see below), whose sum is σ = 2369273088. Its totient is φ = 331948800.

The previous prime is 977690419. The next prime is 977690471. The reversal of 977690420 is 24096779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19481 + ... + 48320.

It is an arithmetic number, because the mean of its divisors is an integer number (49359856).

Almost surely, 2^977690420 is an apocalyptic number.

It is an amenable number.

977690420 is an abundant number, since it is smaller than the sum of its proper divisors (1391582668).

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

977690420 is a wasteful number, since it uses less digits than its factorization.

977690420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67920 (or 67918 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 977690420 is about 31268.0415120615. The cubic root of 977690420 is about 992.5074756166.

The spelling of 977690420 in words is "nine hundred seventy-seven million, six hundred ninety thousand, four hundred twenty".