56613647 has 2 divisors, whose sum is σ = 56613648. Its totient is φ = 56613646.

The previous prime is 56613629. The next prime is 56613653. The reversal of 56613647 is 74631665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56613647 - 2¹⁶ = 56548111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56613647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56613607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28306823 + 28306824.

It is an arithmetic number, because the mean of its divisors is an integer number (28306824).

Almost surely, 2^56613647 is an apocalyptic number.

56613647 is a deficient number, since it is larger than the sum of its proper divisors (1).

56613647 is an equidigital number, since it uses as much as digits as its factorization.

56613647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 56613647 is about 7524.2040775088. The cubic root of 56613647 is about 383.9786206811.

The spelling of 56613647 in words is "fifty-six million, six hundred thirteen thousand, six hundred forty-seven".