56689970 has 8 divisors (see below), whose sum is σ = 102041964. Its totient is φ = 22675984.

The previous prime is 56689967. The next prime is 56689981. The reversal of 56689970 is 7998665.

It can be written as a sum of positive squares in 2 ways, for example, as 55547209 + 1142761 = 7453^2 + 1069^2 .

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

It is a Curzon 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, 2834489 + ... + 2834508.

Almost surely, 2^56689970 is an apocalyptic number.

56689970 is a deficient number, since it is larger than the sum of its proper divisors (45351994).

56689970 is a wasteful number, since it uses less digits than its factorization.

56689970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669004.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 56689970 is about 7529.2742014088. The cubic root of 56689970 is about 384.1510952344.

The spelling of 56689970 in words is "fifty-six million, six hundred eighty-nine thousand, nine hundred seventy".