669412100 has 36 divisors (see below), whose sum is σ = 1660143744. Its totient is φ = 229512480.

The previous prime is 669412097. The next prime is 669412147. The reversal of 669412100 is 1214966.

669412100 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×669412100² = 896225119252820000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477452 + ... + 478851.

It is an arithmetic number, because the mean of its divisors is an integer number (46115104).

Almost surely, 2^669412100 is an apocalyptic number.

It is an amenable number.

669412100 is an abundant number, since it is smaller than the sum of its proper divisors (990731644).

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

669412100 is a wasteful number, since it uses less digits than its factorization.

669412100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956324 (or 956317 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 669412100 is about 25872.9994395702. Note that the first 3 decimals coincide. The cubic root of 669412100 is about 874.7780008235.

Adding to 669412100 its sum of digits (29), we get a square (669412129 = 25873²).

The spelling of 669412100 in words is "six hundred sixty-nine million, four hundred twelve thousand, one hundred".