5656878856 has 16 divisors (see below), whose sum is σ = 10609261740. Its totient is φ = 2827742400.

The previous prime is 5656878847. The next prime is 5656878991. The reversal of 5656878856 is 6588786565.

It can be written as a sum of positive squares in 2 ways, for example, as 5411956356 + 244922500 = 73566^2 + 15650^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51795 + ... + 118306.

Almost surely, 2^5656878856 is an apocalyptic number.

It is an amenable number.

5656878856 is a deficient number, since it is larger than the sum of its proper divisors (4952382884).

5656878856 is a wasteful number, since it uses less digits than its factorization.

5656878856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174264 (or 174260 counting only the distinct ones).

The product of its digits is 96768000, while the sum is 64.

The square root of 5656878856 is about 75212.2254424106. The cubic root of 5656878856 is about 1781.8000197983.

It can be divided in two parts, 56568 and 78856, that added together give a square (135424 = 368²).

The spelling of 5656878856 in words is "five billion, six hundred fifty-six million, eight hundred seventy-eight thousand, eight hundred fifty-six".