669775386 has 16 divisors (see below), whose sum is σ = 1530915264. Its totient is φ = 191364384.

The previous prime is 669775373. The next prime is 669775411. The reversal of 669775386 is 683577966.

It is an unprimeable number.

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, 7973475 + ... + 7973558.

It is an arithmetic number, because the mean of its divisors is an integer number (95682204).

Almost surely, 2^669775386 is an apocalyptic number.

669775386 is an abundant number, since it is smaller than the sum of its proper divisors (861139878).

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

669775386 is a wasteful number, since it uses less digits than its factorization.

669775386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15947045.

The product of its digits is 11430720, while the sum is 57.

The square root of 669775386 is about 25880.0190494520. The cubic root of 669775386 is about 874.9362178270.

The spelling of 669775386 in words is "six hundred sixty-nine million, seven hundred seventy-five thousand, three hundred eighty-six".