646536006 has 24 divisors (see below), whose sum is σ = 1452711624. Its totient is φ = 215511840.

The previous prime is 646535999. The next prime is 646536043. The reversal of 646536006 is 600635646.

646536006 is a `hidden beast` number, since 6 + 46 + 5 + 3 + 600 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 664675 + ... + 665646.

It is an arithmetic number, because the mean of its divisors is an integer number (60529651).

Almost surely, 2^646536006 is an apocalyptic number.

646536006 is an abundant number, since it is smaller than the sum of its proper divisors (806175618).

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

646536006 is a wasteful number, since it uses less digits than its factorization.

646536006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330338 (or 1330326 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 646536006 is about 25427.0723049273. The cubic root of 646536006 is about 864.6975703295.

The spelling of 646536006 in words is "six hundred forty-six million, five hundred thirty-six thousand, six".