646240662 has 24 divisors (see below), whose sum is σ = 1400831640. Its totient is φ = 215314560.

The previous prime is 646240633. The next prime is 646240687. The reversal of 646240662 is 266042646.

646240662 is a `hidden beast` number, since 646 + 2 + 4 + 0 + 6 + 6 + 2 = 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, 39462 + ... + 53382.

It is an arithmetic number, because the mean of its divisors is an integer number (58367985).

Almost surely, 2^646240662 is an apocalyptic number.

646240662 is an abundant number, since it is smaller than the sum of its proper divisors (754590978).

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

646240662 is a wasteful number, since it uses less digits than its factorization.

646240662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16508 (or 16505 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 646240662 is about 25421.2639732961. The cubic root of 646240662 is about 864.5658828267.

The spelling of 646240662 in words is "six hundred forty-six million, two hundred forty thousand, six hundred sixty-two".