5656856640 has 56 divisors (see below), whose sum is σ = 17960522880. Its totient is φ = 1508494848.

The previous prime is 5656856599. The next prime is 5656856707. The reversal of 5656856640 is 466586565.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2945320 + ... + 2947239.

Almost surely, 2^5656856640 is an apocalyptic number.

It is an amenable number.

5656856640 is an abundant number, since it is smaller than the sum of its proper divisors (12303666240).

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

5656856640 is a wasteful number, since it uses less digits than its factorization.

5656856640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892579 (or 5892569 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 51.

The square root of 5656856640 is about 75212.0777535098. The cubic root of 5656856640 is about 1781.7976872682.

The spelling of 5656856640 in words is "five billion, six hundred fifty-six million, eight hundred fifty-six thousand, six hundred forty".