664656507036 has 48 divisors (see below), whose sum is σ = 1755696448800. Its totient is φ = 217371937536.

The previous prime is 664656507007. The next prime is 664656507041. The reversal of 664656507036 is 630705656466.

664656507036 is a `hidden beast` number, since 6 + 6 + 4 + 6 + 565 + 0 + 70 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 58053021 + ... + 58064468.

It is an arithmetic number, because the mean of its divisors is an integer number (36577009350).

Almost surely, 2^664656507036 is an apocalyptic number.

It is an amenable number.

664656507036 is an abundant number, since it is smaller than the sum of its proper divisors (1091039941764).

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

664656507036 is a wasteful number, since it uses less digits than its factorization.

664656507036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116117555 (or 116117547 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 54.

The spelling of 664656507036 in words is "six hundred sixty-four billion, six hundred fifty-six million, five hundred seven thousand, thirty-six".