56636437 has 16 divisors (see below), whose sum is σ = 66749760. Its totient is φ = 47376000.

The previous prime is 56636431. The next prime is 56636441. The reversal of 56636437 is 73463665.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56636437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56636437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56636431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85614 + ... + 86272.

It is an arithmetic number, because the mean of its divisors is an integer number (4171860).

Almost surely, 2^56636437 is an apocalyptic number.

It is an amenable number.

56636437 is a deficient number, since it is larger than the sum of its proper divisors (10113323).

56636437 is a wasteful number, since it uses less digits than its factorization.

56636437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284.

The product of its digits is 272160, while the sum is 40.

The square root of 56636437 is about 7525.7183710261. The cubic root of 56636437 is about 384.0301376990.

It can be divided in two parts, 5663 and 6437, that added together give a square (12100 = 110²).

The spelling of 56636437 in words is "fifty-six million, six hundred thirty-six thousand, four hundred thirty-seven".