669816348 has 24 divisors (see below), whose sum is σ = 1645163520. Its totient is φ = 211520880.

The previous prime is 669816347. The next prime is 669816359. The reversal of 669816348 is 843618966.

It is a self number, because there is not a number n which added to its sum of digits gives 669816348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669816347) 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, 1468668 + ... + 1469123.

It is an arithmetic number, because the mean of its divisors is an integer number (68548480).

Almost surely, 2^669816348 is an apocalyptic number.

It is an amenable number.

669816348 is an abundant number, since it is smaller than the sum of its proper divisors (975347172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669816348 is a wasteful number, since it uses less digits than its factorization.

669816348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2937817 (or 2937815 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 669816348 is about 25880.8104200777. The cubic root of 669816348 is about 874.9540538595.

The spelling of 669816348 in words is "six hundred sixty-nine million, eight hundred sixteen thousand, three hundred forty-eight".