56909870 has 8 divisors (see below), whose sum is σ = 102437784. Its totient is φ = 22763944.

The previous prime is 56909849. The next prime is 56909873. The reversal of 56909870 is 7890965.

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

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56909873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845484 + ... + 2845503.

It is an arithmetic number, because the mean of its divisors is an integer number (12804723).

Almost surely, 2^56909870 is an apocalyptic number.

56909870 is a deficient number, since it is larger than the sum of its proper divisors (45527914).

56909870 is a wasteful number, since it uses less digits than its factorization.

56909870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690994.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 56909870 is about 7543.8630687467. The cubic root of 56909870 is about 384.6471608516.

The spelling of 56909870 in words is "fifty-six million, nine hundred nine thousand, eight hundred seventy".