669702532664 has 32 divisors (see below), whose sum is σ = 1371478953600. Its totient is φ = 304047383520.

The previous prime is 669702532657. The next prime is 669702532691. The reversal of 669702532664 is 466235207966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4461482 + ... + 4609145.

It is an arithmetic number, because the mean of its divisors is an integer number (42858717300).

Almost surely, 2^669702532664 is an apocalyptic number.

It is an amenable number.

669702532664 is an abundant number, since it is smaller than the sum of its proper divisors (701776420936).

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

669702532664 is a wasteful number, since it uses less digits than its factorization.

669702532664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9071483 (or 9071479 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 56.

The spelling of 669702532664 in words is "six hundred sixty-nine billion, seven hundred two million, five hundred thirty-two thousand, six hundred sixty-four".