664557650682 has 32 divisors (see below), whose sum is σ = 1412107603200. Its totient is φ = 208100063808.

The previous prime is 664557650671. The next prime is 664557650699. The reversal of 664557650682 is 286056755466.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51605682 + ... + 51618557.

It is an arithmetic number, because the mean of its divisors is an integer number (44128362600).

Almost surely, 2^664557650682 is an apocalyptic number.

664557650682 is an abundant number, since it is smaller than the sum of its proper divisors (747549952518).

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

664557650682 is a wasteful number, since it uses less digits than its factorization.

664557650682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103224310.

The product of its (nonzero) digits is 72576000, while the sum is 60.

The spelling of 664557650682 in words is "six hundred sixty-four billion, five hundred fifty-seven million, six hundred fifty thousand, six hundred eighty-two".