56689308 has 120 divisors (see below), whose sum is σ = 163830128. Its totient is φ = 16982784.

The previous prime is 56689289. The next prime is 56689309. The reversal of 56689308 is 80398665.

56689308 is a `hidden beast` number, since 566 + 89 + 3 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56689309) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 180960 + ... + 181272.

Almost surely, 2^56689308 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 56689308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81915064).

56689308 is an abundant number, since it is smaller than the sum of its proper divisors (107140820).

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

56689308 is a wasteful number, since it uses less digits than its factorization.

56689308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 56689308 is about 7529.2302395398. The cubic root of 56689308 is about 384.1495999140.

The spelling of 56689308 in words is "fifty-six million, six hundred eighty-nine thousand, three hundred eight".