56965909 has 16 divisors (see below), whose sum is σ = 76487040. Its totient is φ = 40973760.

The previous prime is 56965897. The next prime is 56965921. The reversal of 56965909 is 90956965.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56965897) and next prime (56965921).

It is a cyclic number.

It is not a de Polignac number, because 56965909 - 2¹¹ = 56963861 is a prime.

It is a super-2 number, since 2×56965909² = 6490229576392562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56965969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27454 + ... + 29455.

It is an arithmetic number, because the mean of its divisors is an integer number (4780440).

Almost surely, 2^56965909 is an apocalyptic number.

It is an amenable number.

56965909 is a deficient number, since it is larger than the sum of its proper divisors (19521131).

56965909 is a wasteful number, since it uses less digits than its factorization.

56965909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56940.

The product of its (nonzero) digits is 656100, while the sum is 49.

The square root of 56965909 is about 7547.5763659601. The cubic root of 56965909 is about 384.7733731177.

The spelling of 56965909 in words is "fifty-six million, nine hundred sixty-five thousand, nine hundred nine".