669276564 has 24 divisors (see below), whose sum is σ = 1703613408. Its totient is φ = 202811040.

The previous prime is 669276551. The next prime is 669276583. The reversal of 669276564 is 465672966.

It is a happy number.

669276564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×669276564² = 895862238239292192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2535007 + ... + 2535270.

It is an arithmetic number, because the mean of its divisors is an integer number (70983892).

Almost surely, 2^669276564 is an apocalyptic number.

It is an amenable number.

669276564 is an abundant number, since it is smaller than the sum of its proper divisors (1034336844).

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

669276564 is a wasteful number, since it uses less digits than its factorization.

669276564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070295 (or 5070293 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 51.

The square root of 669276564 is about 25870.3800513251. The cubic root of 669276564 is about 874.7189580137.

The spelling of 669276564 in words is "six hundred sixty-nine million, two hundred seventy-six thousand, five hundred sixty-four".