669147318 has 40 divisors (see below), whose sum is σ = 1713586512. Its totient is φ = 191184624.

The previous prime is 669147293. The next prime is 669147337. The reversal of 669147318 is 813741966.

It is a happy number.

669147318 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 293905 + ... + 296172.

Almost surely, 2^669147318 is an apocalyptic number.

669147318 is an abundant number, since it is smaller than the sum of its proper divisors (1044439194).

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

669147318 is a wasteful number, since it uses less digits than its factorization.

669147318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590098 (or 590089 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 669147318 is about 25867.8819774639. The cubic root of 669147318 is about 874.6626478569.

The spelling of 669147318 in words is "six hundred sixty-nine million, one hundred forty-seven thousand, three hundred eighteen".