655831974 has 24 divisors (see below), whose sum is σ = 1525813848. Its totient is φ = 187380480.

The previous prime is 655831973. The next prime is 655831991. The reversal of 655831974 is 479138556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655831973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1115067 + ... + 1115654.

It is an arithmetic number, because the mean of its divisors is an integer number (63575577).

Almost surely, 2^655831974 is an apocalyptic number.

655831974 is an abundant number, since it is smaller than the sum of its proper divisors (869981874).

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

655831974 is a wasteful number, since it uses less digits than its factorization.

655831974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230740 (or 2230733 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 655831974 is about 25609.2165830976. The cubic root of 655831974 is about 868.8221052655.

The spelling of 655831974 in words is "six hundred fifty-five million, eight hundred thirty-one thousand, nine hundred seventy-four".