56623774 has 4 divisors (see below), whose sum is σ = 84935664. Its totient is φ = 28311886.

The previous prime is 56623771. The next prime is 56623789. The reversal of 56623774 is 47732665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47732665 = 5 ⋅9546533.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56623771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14155942 + ... + 14155945.

It is an arithmetic number, because the mean of its divisors is an integer number (21233916).

Almost surely, 2^56623774 is an apocalyptic number.

56623774 is a deficient number, since it is larger than the sum of its proper divisors (28311890).

56623774 is a wasteful number, since it uses less digits than its factorization.

56623774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28311889.

The product of its digits is 211680, while the sum is 40.

The square root of 56623774 is about 7524.8770089617. The cubic root of 56623774 is about 384.0015145701.

The spelling of 56623774 in words is "fifty-six million, six hundred twenty-three thousand, seven hundred seventy-four".