669686112 has 36 divisors (see below), whose sum is σ = 1904420700. Its totient is φ = 223228608.

The previous prime is 669686099. The next prime is 669686119. The reversal of 669686112 is 211686966.

669686112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669686119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1162362 + ... + 1162937.

It is an arithmetic number, because the mean of its divisors is an integer number (52900575).

Almost surely, 2^669686112 is an apocalyptic number.

It is an amenable number.

669686112 is an abundant number, since it is smaller than the sum of its proper divisors (1234734588).

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

669686112 is a wasteful number, since it uses less digits than its factorization.

669686112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325315 (or 2325304 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 669686112 is about 25878.2942250837. The cubic root of 669686112 is about 874.8973428408.

The spelling of 669686112 in words is "six hundred sixty-nine million, six hundred eighty-six thousand, one hundred twelve".