646060602664 has 32 divisors (see below), whose sum is σ = 1253302272000. Its totient is φ = 311849641152.

The previous prime is 646060602661. The next prime is 646060602679. The reversal of 646060602664 is 466206060646.

It is not an unprimeable number, because it can be changed into a prime (646060602661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589977 + ... + 1954519.

It is an arithmetic number, because the mean of its divisors is an integer number (39165696000).

Almost surely, 2^646060602664 is an apocalyptic number.

It is an amenable number.

646060602664 is a deficient number, since it is larger than the sum of its proper divisors (607241669336).

646060602664 is a wasteful number, since it uses less digits than its factorization.

646060602664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372217 (or 372213 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 646060602664 in words is "six hundred forty-six billion, sixty million, six hundred two thousand, six hundred sixty-four".