56681370 has 160 divisors (see below), whose sum is σ = 167270400. Its totient is φ = 13716864.

The previous prime is 56681357. The next prime is 56681371. The reversal of 56681370 is 7318665.

56681370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56681371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 446247 + ... + 446373.

It is an arithmetic number, because the mean of its divisors is an integer number (1045440).

Almost surely, 2^56681370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56681370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83635200).

56681370 is an abundant number, since it is smaller than the sum of its proper divisors (110589030).

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

56681370 is a wasteful number, since it uses less digits than its factorization.

56681370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 56681370 is about 7528.7030755635. The cubic root of 56681370 is about 384.1316687145.

The spelling of 56681370 in words is "fifty-six million, six hundred eighty-one thousand, three hundred seventy".