646460012 has 24 divisors (see below), whose sum is σ = 1235016720. Its totient is φ = 293639360.

The previous prime is 646459973. The next prime is 646460051. The reversal of 646460012 is 210064646.

It is an interprime number because it is at equal distance from previous prime (646459973) and next prime (646460051).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70898 + ... + 79494.

It is an arithmetic number, because the mean of its divisors is an integer number (51459030).

Almost surely, 2^646460012 is an apocalyptic number.

It is an amenable number.

646460012 is a deficient number, since it is larger than the sum of its proper divisors (588556708).

646460012 is a wasteful number, since it uses less digits than its factorization.

646460012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10321 (or 10319 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 646460012 is about 25425.5779088696. The cubic root of 646460012 is about 864.6636900808.

The spelling of 646460012 in words is "six hundred forty-six million, four hundred sixty thousand, twelve".