669340472 has 16 divisors (see below), whose sum is σ = 1258438560. Its totient is φ = 333756864.

The previous prime is 669340447. The next prime is 669340513. The reversal of 669340472 is 274043966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111053 + ... + 116924.

It is an arithmetic number, because the mean of its divisors is an integer number (78652410).

Almost surely, 2^669340472 is an apocalyptic number.

It is an amenable number.

669340472 is a deficient number, since it is larger than the sum of its proper divisors (589098088).

669340472 is a wasteful number, since it uses less digits than its factorization.

669340472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228350 (or 228346 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 669340472 is about 25871.6151795747. The cubic root of 669340472 is about 874.7467989009.

The spelling of 669340472 in words is "six hundred sixty-nine million, three hundred forty thousand, four hundred seventy-two".