56696809 has 8 divisors (see below), whose sum is σ = 62547912. Its totient is φ = 51058560.

The previous prime is 56696789. The next prime is 56696821. The reversal of 56696809 is 90869665.

It can be written as a sum of positive squares in 4 ways, for example, as 10497600 + 46199209 = 3240^2 + 6797^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56696809 - 2⁵ = 56696777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56696869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52654 + ... + 53719.

It is an arithmetic number, because the mean of its divisors is an integer number (7818489).

Almost surely, 2^56696809 is an apocalyptic number.

It is an amenable number.

56696809 is a deficient number, since it is larger than the sum of its proper divisors (5851103).

56696809 is a wasteful number, since it uses less digits than its factorization.

56696809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106427.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 56696809 is about 7529.7283483536. The cubic root of 56696809 is about 384.1665424332.

The spelling of 56696809 in words is "fifty-six million, six hundred ninety-six thousand, eight hundred nine".