56649613 has 4 divisors (see below), whose sum is σ = 57024928. Its totient is φ = 56274300.

The previous prime is 56649611. The next prime is 56649629. The reversal of 56649613 is 31694665.

56649613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56649613 - 2¹ = 56649611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56649611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187431 + ... + 187732.

It is an arithmetic number, because the mean of its divisors is an integer number (14256232).

Almost surely, 2^56649613 is an apocalyptic number.

It is an amenable number.

56649613 is a deficient number, since it is larger than the sum of its proper divisors (375315).

56649613 is a wasteful number, since it uses less digits than its factorization.

56649613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375314.

The product of its digits is 116640, while the sum is 40.

The square root of 56649613 is about 7526.5937182765. The cubic root of 56649613 is about 384.0599158714.

The spelling of 56649613 in words is "fifty-six million, six hundred forty-nine thousand, six hundred thirteen".