56613643 has 4 divisors (see below), whose sum is σ = 56829168. Its totient is φ = 56398120.

The previous prime is 56613629. The next prime is 56613647. The reversal of 56613643 is 34631665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56613643 - 2⁹ = 56613131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56613599 and 56613608.

It is not an unprimeable number, because it can be changed into a prime (56613647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107368 + ... + 107893.

It is an arithmetic number, because the mean of its divisors is an integer number (14207292).

Almost surely, 2^56613643 is an apocalyptic number.

56613643 is a deficient number, since it is larger than the sum of its proper divisors (215525).

56613643 is a wasteful number, since it uses less digits than its factorization.

56613643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215524.

The product of its digits is 38880, while the sum is 34.

The square root of 56613643 is about 7524.2038116999. The cubic root of 56613643 is about 383.9786116379.

The spelling of 56613643 in words is "fifty-six million, six hundred thirteen thousand, six hundred forty-three".