56766840 has 64 divisors (see below), whose sum is σ = 183405600. Its totient is φ = 13972992.

The previous prime is 56766839. The next prime is 56766847. The reversal of 56766840 is 4866765.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 56766792 and 56766801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56766847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16635 + ... + 19754.

Almost surely, 2^56766840 is an apocalyptic number.

It is an amenable number.

56766840 is an abundant number, since it is smaller than the sum of its proper divisors (126638760).

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

56766840 is a wasteful number, since it uses less digits than its factorization.

56766840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36416 (or 36412 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 56766840 is about 7534.3772138114. The cubic root of 56766840 is about 384.3246494957.

The spelling of 56766840 in words is "fifty-six million, seven hundred sixty-six thousand, eight hundred forty".