56764209 has 8 divisors (see below), whose sum is σ = 76815520. Its totient is φ = 37277856.

The previous prime is 56764199. The next prime is 56764237. The reversal of 56764209 is 90246765.

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

It is not a de Polignac number, because 56764209 - 2⁵ = 56764177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56766209) 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, 141004 + ... + 141405.

It is an arithmetic number, because the mean of its divisors is an integer number (9601940).

Almost surely, 2^56764209 is an apocalyptic number.

It is an amenable number.

56764209 is a deficient number, since it is larger than the sum of its proper divisors (20051311).

56764209 is a wasteful number, since it uses less digits than its factorization.

56764209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282479.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 56764209 is about 7534.2026120884. The cubic root of 56764209 is about 384.3187119109.

The spelling of 56764209 in words is "fifty-six million, seven hundred sixty-four thousand, two hundred nine".