646525002 has 16 divisors (see below), whose sum is σ = 1296378720. Its totient is φ = 214953552.

The previous prime is 646524973. The next prime is 646525007. The reversal of 646525002 is 200525646.

It is a super-2 number, since 2×646525002² = 835989156422200008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (646525007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136168 + ... + 140835.

It is an arithmetic number, because the mean of its divisors is an integer number (81023670).

Almost surely, 2^646525002 is an apocalyptic number.

646525002 is an abundant number, since it is smaller than the sum of its proper divisors (649853718).

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

646525002 is a wasteful number, since it uses less digits than its factorization.

646525002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277397.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 646525002 is about 25426.8559204633. The cubic root of 646525002 is about 864.6926646032.

The spelling of 646525002 in words is "six hundred forty-six million, five hundred twenty-five thousand, two".