669881184 has 48 divisors (see below), whose sum is σ = 2009645568. Its totient is φ = 191394432.

The previous prime is 669881159. The next prime is 669881197. The reversal of 669881184 is 481188966.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497752 + ... + 499095.

It is an arithmetic number, because the mean of its divisors is an integer number (41867616).

Almost surely, 2^669881184 is an apocalyptic number.

It is an amenable number.

669881184 is an abundant number, since it is smaller than the sum of its proper divisors (1339764384).

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

669881184 is a wasteful number, since it uses less digits than its factorization.

669881184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996867 (or 996859 counting only the distinct ones).

The product of its digits is 663552, while the sum is 51.

The square root of 669881184 is about 25882.0629780549. The cubic root of 669881184 is about 874.9822838318.

The spelling of 669881184 in words is "six hundred sixty-nine million, eight hundred eighty-one thousand, one hundred eighty-four".