669253216 has 12 divisors (see below), whose sum is σ = 1317592332. Its totient is φ = 334626592.

The previous prime is 669253201. The next prime is 669253217. The reversal of 669253216 is 612352966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669253217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457050 + ... + 10457113.

It is an arithmetic number, because the mean of its divisors is an integer number (109799361).

Almost surely, 2^669253216 is an apocalyptic number.

It is an amenable number.

669253216 is a deficient number, since it is larger than the sum of its proper divisors (648339116).

669253216 is a wasteful number, since it uses less digits than its factorization.

669253216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20914173 (or 20914165 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 669253216 is about 25869.9287977373. The cubic root of 669253216 is about 874.7087862467.

The spelling of 669253216 in words is "six hundred sixty-nine million, two hundred fifty-three thousand, two hundred sixteen".