669108500 has 24 divisors (see below), whose sum is σ = 1461334056. Its totient is φ = 267643200.

The previous prime is 669108493. The next prime is 669108511. The reversal of 669108500 is 5801966.

It can be written as a sum of positive squares in 4 ways, for example, as 95218564 + 573889936 = 9758^2 + 23956^2 .

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, 668609 + ... + 669608.

It is an arithmetic number, because the mean of its divisors is an integer number (60888919).

Almost surely, 2^669108500 is an apocalyptic number.

It is an amenable number.

669108500 is an abundant number, since it is smaller than the sum of its proper divisors (792225556).

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

669108500 is a wasteful number, since it uses less digits than its factorization.

669108500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338236 (or 1338224 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 669108500 is about 25867.1316538962. The cubic root of 669108500 is about 874.6457341369.

The spelling of 669108500 in words is "six hundred sixty-nine million, one hundred eight thousand, five hundred".