6424564856 has 16 divisors (see below), whose sum is σ = 12371628840. Its totient is φ = 3125463840.

The previous prime is 6424564847. The next prime is 6424564879. The reversal of 6424564856 is 6584654246.

It is a congruent number.

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, 10852010 + ... + 10852601.

Almost surely, 2^6424564856 is an apocalyptic number.

It is an amenable number.

6424564856 is a deficient number, since it is larger than the sum of its proper divisors (5947063984).

6424564856 is a wasteful number, since it uses less digits than its factorization.

6424564856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21704654 (or 21704650 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 50.

The square root of 6424564856 is about 80153.3833097518. The cubic root of 6424564856 is about 1859.0079166162.

The spelling of 6424564856 in words is "six billion, four hundred twenty-four million, five hundred sixty-four thousand, eight hundred fifty-six".