56665624 has 16 divisors (see below), whose sum is σ = 112498200. Its totient is φ = 26666112.

The previous prime is 56665621. The next prime is 56665627. The reversal of 56665624 is 42656665.

It is an interprime number because it is at equal distance from previous prime (56665621) and next prime (56665627).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56665621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208194 + ... + 208465.

Almost surely, 2^56665624 is an apocalyptic number.

It is an amenable number.

56665624 is a deficient number, since it is larger than the sum of its proper divisors (55832576).

56665624 is a wasteful number, since it uses less digits than its factorization.

56665624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416682 (or 416678 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 56665624 is about 7527.6572716882. The cubic root of 56665624 is about 384.0960950187.

The spelling of 56665624 in words is "fifty-six million, six hundred sixty-five thousand, six hundred twenty-four".