56621727 has 16 divisors (see below), whose sum is σ = 84000000. Its totient is φ = 37695672.

The previous prime is 56621693. The next prime is 56621753. The reversal of 56621727 is 72712665.

56621727 is a `hidden beast` number, since 5 + 6 + 621 + 7 + 27 = 666.

It is not a de Polignac number, because 56621727 - 2⁸ = 56621471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56621691 and 56621700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56621797) 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, 37024 + ... + 38522.

It is an arithmetic number, because the mean of its divisors is an integer number (5250000).

Almost surely, 2^56621727 is an apocalyptic number.

56621727 is a deficient number, since it is larger than the sum of its proper divisors (27378273).

56621727 is a wasteful number, since it uses less digits than its factorization.

56621727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907 (or 2901 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 56621727 is about 7524.7409922203. The cubic root of 56621727 is about 383.9968871818.

The spelling of 56621727 in words is "fifty-six million, six hundred twenty-one thousand, seven hundred twenty-seven".