669907292 has 24 divisors (see below), whose sum is σ = 1226029056. Its totient is φ = 319678128.

The previous prime is 669907291. The next prime is 669907313. The reversal of 669907292 is 292709966.

It is a self number, because there is not a number n which added to its sum of digits gives 669907292.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669907291) 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, 34733 + ... + 50459.

It is an arithmetic number, because the mean of its divisors is an integer number (51084544).

Almost surely, 2^669907292 is an apocalyptic number.

It is an amenable number.

669907292 is a deficient number, since it is larger than the sum of its proper divisors (556121764).

669907292 is a wasteful number, since it uses less digits than its factorization.

669907292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16217 (or 16215 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 669907292 is about 25882.5673378821. The cubic root of 669907292 is about 874.9936508927.

The spelling of 669907292 in words is "six hundred sixty-nine million, nine hundred seven thousand, two hundred ninety-two".