669710564760 has 32 divisors (see below), whose sum is σ = 2009131694640. Its totient is φ = 178589483904.

The previous prime is 669710564741. The next prime is 669710564827. The reversal of 669710564760 is 67465017966.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 669710564760.

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, 2790460567 + ... + 2790460806.

Almost surely, 2^669710564760 is an apocalyptic number.

669710564760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669710564760 is an abundant number, since it is smaller than the sum of its proper divisors (1339421129880).

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

669710564760 is a wasteful number, since it uses less digits than its factorization.

669710564760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580921387 (or 5580921383 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 57.

The spelling of 669710564760 in words is "six hundred sixty-nine billion, seven hundred ten million, five hundred sixty-four thousand, seven hundred sixty".