56905870 has 32 divisors (see below), whose sum is σ = 117324288. Its totient is φ = 19467168.

The previous prime is 56905867. The next prime is 56905873. The reversal of 56905870 is 7850965.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56905867) and next prime (56905873).

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 (56905873) 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 15 ways as a sum of consecutive naturals, for example, 57399 + ... + 58381.

It is an arithmetic number, because the mean of its divisors is an integer number (3666384).

Almost surely, 2^56905870 is an apocalyptic number.

56905870 is an abundant number, since it is smaller than the sum of its proper divisors (60418418).

56905870 is a wasteful number, since it uses less digits than its factorization.

56905870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 56905870 is about 7543.5979479291. The cubic root of 56905870 is about 384.6381487962.

It can be divided in two parts, 56905 and 870, that added together give a palindrome (57775).

The spelling of 56905870 in words is "fifty-six million, nine hundred five thousand, eight hundred seventy".