53686564 has 12 divisors (see below), whose sum is σ = 95354224. Its totient is φ = 26442504.

The previous prime is 53686547. The next prime is 53686603. The reversal of 53686564 is 46568635.

It is a self number, because there is not a number n which added to its sum of digits gives 53686564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99894 + ... + 100429.

Almost surely, 2^53686564 is an apocalyptic number.

It is an amenable number.

53686564 is a deficient number, since it is larger than the sum of its proper divisors (41667660).

53686564 is a wasteful number, since it uses less digits than its factorization.

53686564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200394 (or 200392 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 53686564 is about 7327.1115727823. Note that the first 3 decimals coincide. The cubic root of 53686564 is about 377.2435906256.

The spelling of 53686564 in words is "fifty-three million, six hundred eighty-six thousand, five hundred sixty-four".