56670740 has 48 divisors (see below), whose sum is σ = 137676672. Its totient is φ = 19191936.

The previous prime is 56670721. The next prime is 56670773. The reversal of 56670740 is 4707665.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 56670740.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 9182 + ... + 14058.

It is an arithmetic number, because the mean of its divisors is an integer number (2868264).

Almost surely, 2^56670740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56670740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68838336).

56670740 is an abundant number, since it is smaller than the sum of its proper divisors (81005932).

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

56670740 is a wasteful number, since it uses less digits than its factorization.

56670740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976 (or 4974 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 56670740 is about 7527.9970775765. The cubic root of 56670740 is about 384.1076539167.

The spelling of 56670740 in words is "fifty-six million, six hundred seventy thousand, seven hundred forty".