64653567 has 24 divisors (see below), whose sum is σ = 100337328. Its totient is φ = 36875520.

The previous prime is 64653559. The next prime is 64653571. The reversal of 64653567 is 76535646.

It is not a de Polignac number, because 64653567 - 2³ = 64653559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64653517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 933 + ... + 11409.

It is an arithmetic number, because the mean of its divisors is an integer number (4180722).

Almost surely, 2^64653567 is an apocalyptic number.

64653567 is a deficient number, since it is larger than the sum of its proper divisors (35683761).

64653567 is a wasteful number, since it uses less digits than its factorization.

64653567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10519 (or 10508 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The square root of 64653567 is about 8040.7441819772. The cubic root of 64653567 is about 401.3569891619.

The spelling of 64653567 in words is "sixty-four million, six hundred fifty-three thousand, five hundred sixty-seven".