320664492 has 36 divisors (see below), whose sum is σ = 811443360. Its totient is φ = 106772832.

The previous prime is 320664481. The next prime is 320664497. The reversal of 320664492 is 294466023.

320664492 is a `hidden beast` number, since 3 + 2 + 0 + 6 + 644 + 9 + 2 = 666.

320664492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (320664497) 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, 33118 + ... + 41690.

Almost surely, 2^320664492 is an apocalyptic number.

It is an amenable number.

320664492 is an abundant number, since it is smaller than the sum of its proper divisors (490778868).

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

320664492 is a wasteful number, since it uses less digits than its factorization.

320664492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9622 (or 9617 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 320664492 is about 17907.1073040846. The cubic root of 320664492 is about 684.4634952305.

The spelling of 320664492 in words is "three hundred twenty million, six hundred sixty-four thousand, four hundred ninety-two".