56670978 has 64 divisors (see below), whose sum is σ = 140378112. Its totient is φ = 14852160.

The previous prime is 56670967. The next prime is 56670997. The reversal of 56670978 is 87907665.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 147775 + ... + 148157.

It is an arithmetic number, because the mean of its divisors is an integer number (2193408).

Almost surely, 2^56670978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56670978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70189056).

56670978 is an abundant number, since it is smaller than the sum of its proper divisors (83707134).

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

56670978 is a wasteful number, since it uses less digits than its factorization.

56670978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 56670978 is about 7528.0128852175. The cubic root of 56670978 is about 384.1081916280.

The spelling of 56670978 in words is "fifty-six million, six hundred seventy thousand, nine hundred seventy-eight".