1668670504 has 16 divisors (see below), whose sum is σ = 3141743220. Its totient is φ = 830872320.

The previous prime is 1668670499. The next prime is 1668670517. The reversal of 1668670504 is 4050768661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1642680900 + 25989604 = 40530^2 + 5098^2 .

It is a super-2 number, since 2×1668670504² = 5568922501839228032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430819 + ... + 434674.

Almost surely, 2^1668670504 is an apocalyptic number.

It is an amenable number.

1668670504 is a deficient number, since it is larger than the sum of its proper divisors (1473072716).

1668670504 is a wasteful number, since it uses less digits than its factorization.

1668670504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865740 (or 865736 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1668670504 is about 40849.3635690937. The cubic root of 1668670504 is about 1186.1060735671.

The spelling of 1668670504 in words is "one billion, six hundred sixty-eight million, six hundred seventy thousand, five hundred four".