669839074 has 16 divisors (see below), whose sum is σ = 1049071680. Its totient is φ = 320166000.

The previous prime is 669839057. The next prime is 669839077. The reversal of 669839074 is 470938966.

It is not an unprimeable number, because it can be changed into a prime (669839077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100312 + ... + 106780.

It is an arithmetic number, because the mean of its divisors is an integer number (65566980).

Almost surely, 2^669839074 is an apocalyptic number.

669839074 is a deficient number, since it is larger than the sum of its proper divisors (379232606).

669839074 is a wasteful number, since it uses less digits than its factorization.

669839074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8745.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 669839074 is about 25881.2494675199. The cubic root of 669839074 is about 874.9639490997.

The spelling of 669839074 in words is "six hundred sixty-nine million, eight hundred thirty-nine thousand, seventy-four".