56779776 has 132 divisors (see below), whose sum is σ = 168287964. Its totient is φ = 18432000.

The previous prime is 56779769. The next prime is 56779783. The reversal of 56779776 is 67797765.

56779776 is a `hidden beast` number, since 567 + 7 + 9 + 7 + 76 = 666.

It is an interprime number because it is at equal distance from previous prime (56779769) and next prime (56779783).

It can be written as a sum of positive squares in 2 ways, for example, as 27878400 + 28901376 = 5280^2 + 5376^2 .

It is a super-2 number, since 2×56779776² = 6447885925220352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 562126 + ... + 562226.

Almost surely, 2^56779776 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 56779776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84143982).

56779776 is an abundant number, since it is smaller than the sum of its proper divisors (111508188).

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

56779776 is a wasteful number, since it uses less digits than its factorization.

56779776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 167 counting only the distinct ones).

The product of its digits is 3889620, while the sum is 54.

The square root of 56779776 is about 7535.2356300251. The cubic root of 56779776 is about 384.3538405168.

The spelling of 56779776 in words is "fifty-six million, seven hundred seventy-nine thousand, seven hundred seventy-six".