669516460 has 12 divisors (see below), whose sum is σ = 1405984608. Its totient is φ = 267806576.

The previous prime is 669516383. The next prime is 669516467. The reversal of 669516460 is 64615966.

It is not an unprimeable number, because it can be changed into a prime (669516467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16737892 + ... + 16737931.

It is an arithmetic number, because the mean of its divisors is an integer number (117165384).

Almost surely, 2^669516460 is an apocalyptic number.

It is an amenable number.

669516460 is an abundant number, since it is smaller than the sum of its proper divisors (736468148).

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

669516460 is a wasteful number, since it uses less digits than its factorization.

669516460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33475832 (or 33475830 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 669516460 is about 25875.0161352607. The cubic root of 669516460 is about 874.8234571717.

The spelling of 669516460 in words is "six hundred sixty-nine million, five hundred sixteen thousand, four hundred sixty".