69321664 has 14 divisors (see below), whose sum is σ = 137560304. Its totient is φ = 34660800.

The previous prime is 69321649. The next prime is 69321689. The reversal of 69321664 is 46612396.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541512 + ... + 541639.

It is an arithmetic number, because the mean of its divisors is an integer number (9825736).

Almost surely, 2^69321664 is an apocalyptic number.

69321664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

69321664 is a deficient number, since it is larger than the sum of its proper divisors (68238640).

69321664 is a wasteful number, since it uses less digits than its factorization.

69321664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083163 (or 1083153 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 69321664 is about 8325.9632475768. The cubic root of 69321664 is about 410.7929607252.

The spelling of 69321664 in words is "sixty-nine million, three hundred twenty-one thousand, six hundred sixty-four".