646616330 has 32 divisors (see below), whose sum is σ = 1210144320. Its totient is φ = 248561280.

The previous prime is 646616317. The next prime is 646616351. The reversal of 646616330 is 33616646.

It is a super-2 number, since 2×646616330² = 836225356445337800, which contains 22 as substring.

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, 15701 + ... + 39239.

It is an arithmetic number, because the mean of its divisors is an integer number (37817010).

Almost surely, 2^646616330 is an apocalyptic number.

646616330 is a deficient number, since it is larger than the sum of its proper divisors (563527990).

646616330 is a wasteful number, since it uses less digits than its factorization.

646616330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23654.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 646616330 is about 25428.6517534847. The cubic root of 646616330 is about 864.7333781272.

The spelling of 646616330 in words is "six hundred forty-six million, six hundred sixteen thousand, three hundred thirty".