323639985 has 16 divisors (see below), whose sum is σ = 518094720. Its totient is φ = 172517760.

The previous prime is 323639959. The next prime is 323639989. The reversal of 323639985 is 589936323.

It is not a de Polignac number, because 323639985 - 2²⁷ = 189422257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (323639989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32196 + ... + 41034.

It is an arithmetic number, because the mean of its divisors is an integer number (32380920).

Almost surely, 2^323639985 is an apocalyptic number.

It is an amenable number.

323639985 is a deficient number, since it is larger than the sum of its proper divisors (194454735).

323639985 is a wasteful number, since it uses less digits than its factorization.

323639985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11288.

The product of its digits is 1049760, while the sum is 48.

The square root of 323639985 is about 17989.9968037796. The cubic root of 323639985 is about 686.5740597088.

The spelling of 323639985 in words is "three hundred twenty-three million, six hundred thirty-nine thousand, nine hundred eighty-five".