669534288 has 20 divisors (see below), whose sum is σ = 1729630368. Its totient is φ = 223178080.

The previous prime is 669534269. The next prime is 669534323. The reversal of 669534288 is 882435966.

It is a self number, because there is not a number n which added to its sum of digits gives 669534288.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6974268 + ... + 6974363.

Almost surely, 2^669534288 is an apocalyptic number.

It is an amenable number.

669534288 is an abundant number, since it is smaller than the sum of its proper divisors (1060096080).

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

669534288 is a wasteful number, since it uses less digits than its factorization.

669534288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13948642 (or 13948636 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 669534288 is about 25875.3606351680. The cubic root of 669534288 is about 874.8312220861.

The spelling of 669534288 in words is "six hundred sixty-nine million, five hundred thirty-four thousand, two hundred eighty-eight".