56869913 has 8 divisors (see below), whose sum is σ = 60283080. Its totient is φ = 53464320.

The previous prime is 56869867. The next prime is 56869921. The reversal of 56869913 is 31996865.

It can be written as a sum of positive squares in 4 ways, for example, as 6927424 + 49942489 = 2632^2 + 7067^2 .

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

It is not a de Polignac number, because 56869913 - 2²⁴ = 40092697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56869973) 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, 23123 + ... + 25463.

It is an arithmetic number, because the mean of its divisors is an integer number (7535385).

Almost surely, 2^56869913 is an apocalyptic number.

It is an amenable number.

56869913 is a deficient number, since it is larger than the sum of its proper divisors (3413167).

56869913 is a wasteful number, since it uses less digits than its factorization.

56869913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787.

The product of its digits is 349920, while the sum is 47.

The square root of 56869913 is about 7541.2142921416. The cubic root of 56869913 is about 384.5571182104.

The spelling of 56869913 in words is "fifty-six million, eight hundred sixty-nine thousand, nine hundred thirteen".