669386594 has 16 divisors (see below), whose sum is σ = 1067110200. Its totient is φ = 313830144.

The previous prime is 669386593. The next prime is 669386603. The reversal of 669386594 is 495683966.

669386594 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 648364369 + 21022225 = 25463^2 + 4585^2 .

It is not an unprimeable number, because it can be changed into a prime (669386591) 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, 27449 + ... + 45740.

Almost surely, 2^669386594 is an apocalyptic number.

669386594 is a deficient number, since it is larger than the sum of its proper divisors (397723606).

669386594 is a wasteful number, since it uses less digits than its factorization.

669386594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73477.

The product of its digits is 8398080, while the sum is 56.

The square root of 669386594 is about 25872.5065271999. The cubic root of 669386594 is about 874.7668903924.

The spelling of 669386594 in words is "six hundred sixty-nine million, three hundred eighty-six thousand, five hundred ninety-four".