669927996 has 30 divisors (see below), whose sum is σ = 1751324960. Its totient is φ = 223309224.

The previous prime is 669927991. The next prime is 669927997. The reversal of 669927996 is 699729966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669927991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1033516 + ... + 1034163.

Almost surely, 2^669927996 is an apocalyptic number.

It is an amenable number.

669927996 is an abundant number, since it is smaller than the sum of its proper divisors (1081396964).

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

669927996 is a wasteful number, since it uses less digits than its factorization.

669927996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067695 (or 2067684 counting only the distinct ones).

The product of its digits is 19840464, while the sum is 63.

The square root of 669927996 is about 25882.9672951151. The cubic root of 669927996 is about 875.0026649171.

The spelling of 669927996 in words is "six hundred sixty-nine million, nine hundred twenty-seven thousand, nine hundred ninety-six".