56690766 has 80 divisors (see below), whose sum is σ = 143486640. Its totient is φ = 16571520.

The previous prime is 56690747. The next prime is 56690773. The reversal of 56690766 is 66709665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 51130 + ... + 52226.

It is an arithmetic number, because the mean of its divisors is an integer number (1793583).

Almost surely, 2^56690766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56690766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71743320).

56690766 is an abundant number, since it is smaller than the sum of its proper divisors (86795874).

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

56690766 is a wasteful number, since it uses less digits than its factorization.

56690766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 56690766 is about 7529.3270615640. The cubic root of 56690766 is about 384.1528932176.

The spelling of 56690766 in words is "fifty-six million, six hundred ninety thousand, seven hundred sixty-six".