646005316 has 12 divisors (see below), whose sum is σ = 1233282960. Its totient is φ = 293638760.

The previous prime is 646005313. The next prime is 646005319. The reversal of 646005316 is 613500646.

It is an interprime number because it is at equal distance from previous prime (646005313) and next prime (646005319).

It is not an unprimeable number, because it can be changed into a prime (646005313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7340926 + ... + 7341013.

It is an arithmetic number, because the mean of its divisors is an integer number (102773580).

Almost surely, 2^646005316 is an apocalyptic number.

It is an amenable number.

646005316 is a deficient number, since it is larger than the sum of its proper divisors (587277644).

646005316 is a wasteful number, since it uses less digits than its factorization.

646005316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14681954 (or 14681952 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 646005316 is about 25416.6346316738. The cubic root of 646005316 is about 864.4609184075.

The spelling of 646005316 in words is "six hundred forty-six million, five thousand, three hundred sixteen".