669776484 has 48 divisors (see below), whose sum is σ = 1685452608. Its totient is φ = 205788288.

The previous prime is 669776473. The next prime is 669776501. The reversal of 669776484 is 484677966.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 121639 + ... + 127025.

It is an arithmetic number, because the mean of its divisors is an integer number (35113596).

Almost surely, 2^669776484 is an apocalyptic number.

It is an amenable number.

669776484 is an abundant number, since it is smaller than the sum of its proper divisors (1015676124).

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

669776484 is a wasteful number, since it uses less digits than its factorization.

669776484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204 (or 6202 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 57.

The square root of 669776484 is about 25880.0402627198. The cubic root of 669776484 is about 874.9366959372.

The spelling of 669776484 in words is "six hundred sixty-nine million, seven hundred seventy-six thousand, four hundred eighty-four".