56636774 has 4 divisors (see below), whose sum is σ = 84955164. Its totient is φ = 28318386.

The previous prime is 56636773. The next prime is 56636803. The reversal of 56636774 is 47763665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47763665 = 5 ⋅9552733.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56636773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14159192 + ... + 14159195.

It is an arithmetic number, because the mean of its divisors is an integer number (21238791).

Almost surely, 2^56636774 is an apocalyptic number.

56636774 is a deficient number, since it is larger than the sum of its proper divisors (28318390).

56636774 is a wasteful number, since it uses less digits than its factorization.

56636774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28318389.

The product of its digits is 635040, while the sum is 44.

The square root of 56636774 is about 7525.7407608819. The cubic root of 56636774 is about 384.0308993871.

The spelling of 56636774 in words is "fifty-six million, six hundred thirty-six thousand, seven hundred seventy-four".