669383320 has 32 divisors (see below), whose sum is σ = 1531645200. Its totient is φ = 263214208.

The previous prime is 669383291. The next prime is 669383321. The reversal of 669383320 is 23383966.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669383321) 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, 139459 + ... + 144178.

Almost surely, 2^669383320 is an apocalyptic number.

It is an amenable number.

669383320 is an abundant number, since it is smaller than the sum of its proper divisors (862261880).

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

669383320 is a wasteful number, since it uses less digits than its factorization.

669383320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283707 (or 283703 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 669383320 is about 25872.4432553248. The cubic root of 669383320 is about 874.7654642153.

The spelling of 669383320 in words is "six hundred sixty-nine million, three hundred eighty-three thousand, three hundred twenty".