669667368 has 32 divisors (see below), whose sum is σ = 1674842400. Its totient is φ = 223132608.

The previous prime is 669667367. The next prime is 669667381. The reversal of 669667368 is 863766966.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (669667367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85255 + ... + 92777.

It is an arithmetic number, because the mean of its divisors is an integer number (52338825).

Almost surely, 2^669667368 is an apocalyptic number.

It is an amenable number.

669667368 is an abundant number, since it is smaller than the sum of its proper divisors (1005175032).

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

669667368 is a wasteful number, since it uses less digits than its factorization.

669667368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11241 (or 11237 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 57.

The square root of 669667368 is about 25877.9320657583. The cubic root of 669667368 is about 874.8891801964.

The spelling of 669667368 in words is "six hundred sixty-nine million, six hundred sixty-seven thousand, three hundred sixty-eight".