669176404 has 24 divisors (see below), whose sum is σ = 1275319080. Its totient is φ = 305378304.

The previous prime is 669176399. The next prime is 669176419. The reversal of 669176404 is 404671966.

669176404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27060804 + 642115600 = 5202^2 + 25340^2 .

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, 67669 + ... + 76924.

It is an arithmetic number, because the mean of its divisors is an integer number (53138295).

Almost surely, 2^669176404 is an apocalyptic number.

It is an amenable number.

669176404 is a deficient number, since it is larger than the sum of its proper divisors (606142676).

669176404 is a wasteful number, since it uses less digits than its factorization.

669176404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144699 (or 144697 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 669176404 is about 25868.4441743217. Note that the first 3 decimals coincide. The cubic root of 669176404 is about 874.6753207360.

The spelling of 669176404 in words is "six hundred sixty-nine million, one hundred seventy-six thousand, four hundred four".