56776620 has 48 divisors (see below), whose sum is σ = 160247808. Its totient is φ = 15019200.

The previous prime is 56776619. The next prime is 56776633. The reversal of 56776620 is 2667765.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3895 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (3338496).

Almost surely, 2^56776620 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 56776620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80123904).

56776620 is an abundant number, since it is smaller than the sum of its proper divisors (103471188).

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

56776620 is a wasteful number, since it uses less digits than its factorization.

56776620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7590 (or 7588 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 56776620 is about 7535.0262109697. The cubic root of 56776620 is about 384.3467191831.

The spelling of 56776620 in words is "fifty-six million, seven hundred seventy-six thousand, six hundred twenty".