6456766408 has 16 divisors (see below), whose sum is σ = 12167893980. Its totient is φ = 3211994688.

The previous prime is 6456766399. The next prime is 6456766411. The reversal of 6456766408 is 8046676546.

It can be written as a sum of positive squares in 2 ways, for example, as 5195238084 + 1261528324 = 72078^2 + 35518^2 .

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, 2046891 + ... + 2050042.

Almost surely, 2^6456766408 is an apocalyptic number.

It is an amenable number.

6456766408 is a deficient number, since it is larger than the sum of its proper divisors (5711127572).

6456766408 is a wasteful number, since it uses less digits than its factorization.

6456766408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097136 (or 4097132 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The square root of 6456766408 is about 80354.0067949321. The cubic root of 6456766408 is about 1862.1086818260.

The spelling of 6456766408 in words is "six billion, four hundred fifty-six million, seven hundred sixty-six thousand, four hundred eight".