646970376 has 64 divisors (see below), whose sum is σ = 1744384320. Its totient is φ = 198777600.

The previous prime is 646970333. The next prime is 646970399. The reversal of 646970376 is 673079646.

646970376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326926 + ... + 328898.

It is an arithmetic number, because the mean of its divisors is an integer number (27256005).

Almost surely, 2^646970376 is an apocalyptic number.

It is an amenable number.

646970376 is an abundant number, since it is smaller than the sum of its proper divisors (1097413944).

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

646970376 is a wasteful number, since it uses less digits than its factorization.

646970376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 48.

The square root of 646970376 is about 25435.6123574802. The cubic root of 646970376 is about 864.8911736747.

The spelling of 646970376 in words is "six hundred forty-six million, nine hundred seventy thousand, three hundred seventy-six".