56679391 has 4 divisors (see below), whose sum is σ = 56695000. Its totient is φ = 56663784.

The previous prime is 56679367. The next prime is 56679401. The reversal of 56679391 is 19397665.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 56679391 - 2⁷ = 56679263 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 (56679361) 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, 820 + ... + 10678.

It is an arithmetic number, because the mean of its divisors is an integer number (14173750).

Almost surely, 2^56679391 is an apocalyptic number.

56679391 is a deficient number, since it is larger than the sum of its proper divisors (15609).

56679391 is an equidigital number, since it uses as much as digits as its factorization.

56679391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15608.

The product of its digits is 306180, while the sum is 46.

The square root of 56679391 is about 7528.5716440770. The cubic root of 56679391 is about 384.1271980779.

The spelling of 56679391 in words is "fifty-six million, six hundred seventy-nine thousand, three hundred ninety-one".