69540864 has 44 divisors (see below), whose sum is σ = 185359944. Its totient is φ = 23179264.

The previous prime is 69540857. The next prime is 69540883. The reversal of 69540864 is 46804596.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8247 + ... + 14390.

It is an arithmetic number, because the mean of its divisors is an integer number (4212726).

Almost surely, 2^69540864 is an apocalyptic number.

69540864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

69540864 is an abundant number, since it is smaller than the sum of its proper divisors (115819080).

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

69540864 is a wasteful number, since it uses less digits than its factorization.

69540864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22660 (or 22642 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 69540864 is about 8339.1164999657. The cubic root of 69540864 is about 411.2254906049.

The spelling of 69540864 in words is "sixty-nine million, five hundred forty thousand, eight hundred sixty-four".