667764480702 has 32 divisors (see below), whose sum is σ = 1459465795584. Its totient is φ = 202002163200.

The previous prime is 667764480659. The next prime is 667764480767. The reversal of 667764480702 is 207084467766.

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

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, 8729374 + ... + 8805537.

It is an arithmetic number, because the mean of its divisors is an integer number (45608306112).

Almost surely, 2^667764480702 is an apocalyptic number.

667764480702 is an abundant number, since it is smaller than the sum of its proper divisors (791701314882).

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

667764480702 is a wasteful number, since it uses less digits than its factorization.

667764480702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17535504.

The product of its (nonzero) digits is 18966528, while the sum is 57.

The spelling of 667764480702 in words is "six hundred sixty-seven billion, seven hundred sixty-four million, four hundred eighty thousand, seven hundred two".