669372490207 has 4 divisors (see below), whose sum is σ = 669374437320. Its totient is φ = 669370543096.

The previous prime is 669372490169. The next prime is 669372490253. The reversal of 669372490207 is 702094273966.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-669372490207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669372490277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304732 + ... + 1196497.

It is an arithmetic number, because the mean of its divisors is an integer number (167343609330).

Almost surely, 2^669372490207 is an apocalyptic number.

669372490207 is a deficient number, since it is larger than the sum of its proper divisors (1947113).

669372490207 is a wasteful number, since it uses less digits than its factorization.

669372490207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947112.

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 669372490207 in words is "six hundred sixty-nine billion, three hundred seventy-two million, four hundred ninety thousand, two hundred seven".