669666116 has 12 divisors (see below), whose sum is σ = 1339332288. Its totient is φ = 286999752.

The previous prime is 669666097. The next prime is 669666119. The reversal of 669666116 is 611666966.

669666116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

669666116 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (669666119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11958296 + ... + 11958351.

It is an arithmetic number, because the mean of its divisors is an integer number (111611024).

Almost surely, 2^669666116 is an apocalyptic number.

It is an amenable number.

669666116 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

669666116 is a wasteful number, since it uses less digits than its factorization.

669666116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23916658 (or 23916656 counting only the distinct ones).

The product of its digits is 419904, while the sum is 47.

The square root of 669666116 is about 25877.9078752514. The cubic root of 669666116 is about 874.8886349695. Note that the first 3 decimals are identical.

The spelling of 669666116 in words is "six hundred sixty-nine million, six hundred sixty-six thousand, one hundred sixteen".