669912327 has 24 divisors (see below), whose sum is σ = 1113973536. Its totient is φ = 380007936.

The previous prime is 669912323. The next prime is 669912359. The reversal of 669912327 is 723219966.

It is a happy number.

It is not a de Polignac number, because 669912327 - 2² = 669912323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669912323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30178 + ... + 47439.

It is an arithmetic number, because the mean of its divisors is an integer number (46415564).

Almost surely, 2^669912327 is an apocalyptic number.

669912327 is a deficient number, since it is larger than the sum of its proper divisors (444061209).

669912327 is a wasteful number, since it uses less digits than its factorization.

669912327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77767 (or 77764 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 669912327 is about 25882.6646039391. The cubic root of 669912327 is about 874.9958430279.

The spelling of 669912327 in words is "six hundred sixty-nine million, nine hundred twelve thousand, three hundred twenty-seven".