56870406 has 48 divisors (see below), whose sum is σ = 134020224. Its totient is φ = 17356032.

The previous prime is 56870353. The next prime is 56870413. The reversal of 56870406 is 60407865.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8811 + ... + 13833.

It is an arithmetic number, because the mean of its divisors is an integer number (2792088).

Almost surely, 2^56870406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56870406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67010112).

56870406 is an abundant number, since it is smaller than the sum of its proper divisors (77149818).

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

56870406 is a wasteful number, since it uses less digits than its factorization.

56870406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085 (or 5082 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 56870406 is about 7541.2469791143. The cubic root of 56870406 is about 384.5582294372.

The spelling of 56870406 in words is "fifty-six million, eight hundred seventy thousand, four hundred six".