669470907 has 8 divisors (see below), whose sum is σ = 1020146176. Its totient is φ = 382554792.

The previous prime is 669470899. The next prime is 669470927. The reversal of 669470907 is 709074966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 669470907 - 2³ = 669470899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (669470927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15939763 + ... + 15939804.

It is an arithmetic number, because the mean of its divisors is an integer number (127518272).

Almost surely, 2^669470907 is an apocalyptic number.

669470907 is a deficient number, since it is larger than the sum of its proper divisors (350675269).

669470907 is a wasteful number, since it uses less digits than its factorization.

669470907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31879577.

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 669470907 is about 25874.1358696286. The cubic root of 669470907 is about 874.8036161176.

The spelling of 669470907 in words is "six hundred sixty-nine million, four hundred seventy thousand, nine hundred seven".