56613813 has 8 divisors (see below), whose sum is σ = 75523776. Its totient is φ = 37723200.

The previous prime is 56613769. The next prime is 56613827. The reversal of 56613813 is 31831665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56613813 - 2¹⁶ = 56548277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56613853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4653 + ... + 11613.

It is an arithmetic number, because the mean of its divisors is an integer number (9440472).

Almost surely, 2^56613813 is an apocalyptic number.

It is an amenable number.

56613813 is a deficient number, since it is larger than the sum of its proper divisors (18909963).

56613813 is a wasteful number, since it uses less digits than its factorization.

56613813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9675.

The product of its digits is 12960, while the sum is 33.

The square root of 56613813 is about 7524.2151085678. The cubic root of 56613813 is about 383.9789959757.

The spelling of 56613813 in words is "fifty-six million, six hundred thirteen thousand, eight hundred thirteen".