56405670 has 16 divisors (see below), whose sum is σ = 135373680. Its totient is φ = 15041504.

The previous prime is 56405659. The next prime is 56405689. The reversal of 56405670 is 7650465.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 940065 + ... + 940124.

It is an arithmetic number, because the mean of its divisors is an integer number (8460855).

Almost surely, 2^56405670 is an apocalyptic number.

56405670 is an abundant number, since it is smaller than the sum of its proper divisors (78968010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56405670 is a wasteful number, since it uses less digits than its factorization.

56405670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880199.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 56405670 is about 7510.3708297261. The cubic root of 56405670 is about 383.5078466064.

It can be divided in two parts, 56405 and 670, that added together give a palindrome (57075).

The spelling of 56405670 in words is "fifty-six million, four hundred five thousand, six hundred seventy".