609831964 has 12 divisors (see below), whose sum is σ = 1219663984. Its totient is φ = 261356544.

The previous prime is 609831953. The next prime is 609831967. The reversal of 609831964 is 469138906.

609831964 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609831967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10889829 + ... + 10889884.

Almost surely, 2^609831964 is an apocalyptic number.

It is an amenable number.

609831964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

609831964 is a wasteful number, since it uses less digits than its factorization.

609831964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21779724 (or 21779722 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 609831964 is about 24694.7760467675. The cubic root of 609831964 is about 848.0147273311.

The spelling of 609831964 in words is "six hundred nine million, eight hundred thirty-one thousand, nine hundred sixty-four".