56065645 has 4 divisors (see below), whose sum is σ = 67278780. Its totient is φ = 44852512.

The previous prime is 56065627. The next prime is 56065661. The reversal of 56065645 is 54656065.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17489124 + 38576521 = 4182^2 + 6211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56065645 is a prime.

It is a super-3 number, since 3×56065645³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5606560 + ... + 5606569.

It is an arithmetic number, because the mean of its divisors is an integer number (16819695).

Almost surely, 2^56065645 is an apocalyptic number.

It is an amenable number.

56065645 is a deficient number, since it is larger than the sum of its proper divisors (11213135).

56065645 is a wasteful number, since it uses less digits than its factorization.

56065645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11213134.

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 56065645 is about 7487.6995799778. The cubic root of 56065645 is about 382.7356714735.

The spelling of 56065645 in words is "fifty-six million, sixty-five thousand, six hundred forty-five".