669108684 has 24 divisors (see below), whose sum is σ = 1599334128. Its totient is φ = 217596160.

The previous prime is 669108683. The next prime is 669108721. The reversal of 669108684 is 486801966.

It is not an unprimeable number, because it can be changed into a prime (669108683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679497 + ... + 680480.

It is an arithmetic number, because the mean of its divisors is an integer number (66638922).

Almost surely, 2^669108684 is an apocalyptic number.

It is an amenable number.

669108684 is an abundant number, since it is smaller than the sum of its proper divisors (930225444).

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

669108684 is a wasteful number, since it uses less digits than its factorization.

669108684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360025 (or 1360023 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 669108684 is about 25867.1352105331. The cubic root of 669108684 is about 874.6458143106.

The spelling of 669108684 in words is "six hundred sixty-nine million, one hundred eight thousand, six hundred eighty-four".