669646470 has 16 divisors (see below), whose sum is σ = 1607151600. Its totient is φ = 178572384.

The previous prime is 669646451. The next prime is 669646493. The reversal of 669646470 is 74646966.

It is a congruent number.

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, 11160745 + ... + 11160804.

It is an arithmetic number, because the mean of its divisors is an integer number (100446975).

Almost surely, 2^669646470 is an apocalyptic number.

669646470 is an abundant number, since it is smaller than the sum of its proper divisors (937505130).

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

669646470 is a wasteful number, since it uses less digits than its factorization.

669646470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22321559.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The square root of 669646470 is about 25877.5282822761. The cubic root of 669646470 is about 874.8800793477.

The spelling of 669646470 in words is "six hundred sixty-nine million, six hundred forty-six thousand, four hundred seventy".