239642664 has 16 divisors (see below), whose sum is σ = 599106720. Its totient is φ = 79880880.

The previous prime is 239642651. The next prime is 239642677. The reversal of 239642664 is 466246932.

It is an interprime number because it is at equal distance from previous prime (239642651) and next prime (239642677).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4992532 + ... + 4992579.

It is an arithmetic number, because the mean of its divisors is an integer number (37444170).

Almost surely, 2^239642664 is an apocalyptic number.

239642664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

239642664 is an abundant number, since it is smaller than the sum of its proper divisors (359464056).

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

239642664 is a wasteful number, since it uses less digits than its factorization.

239642664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9985120 (or 9985116 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 239642664 is about 15480.3961189628. The cubic root of 239642664 is about 621.1379240947.

The spelling of 239642664 in words is "two hundred thirty-nine million, six hundred forty-two thousand, six hundred sixty-four".