669378744 has 48 divisors (see below), whose sum is σ = 1814412600. Its totient is φ = 222940224.

The previous prime is 669378739. The next prime is 669378767. The reversal of 669378744 is 447873966.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103642 + ... + 109910.

Almost surely, 2^669378744 is an apocalyptic number.

It is an amenable number.

669378744 is an abundant number, since it is smaller than the sum of its proper divisors (1145033856).

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

669378744 is a wasteful number, since it uses less digits than its factorization.

669378744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7764 (or 7757 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 669378744 is about 25872.3548213146. The cubic root of 669378744 is about 874.7634708702.

The spelling of 669378744 in words is "six hundred sixty-nine million, three hundred seventy-eight thousand, seven hundred forty-four".