669488524 has 12 divisors (see below), whose sum is σ = 1209398848. Its totient is φ = 323946000.

The previous prime is 669488507. The next prime is 669488537. The reversal of 669488524 is 425884966.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2699427 + ... + 2699674.

Almost surely, 2^669488524 is an apocalyptic number.

It is an amenable number.

669488524 is a deficient number, since it is larger than the sum of its proper divisors (539910324).

669488524 is a wasteful number, since it uses less digits than its factorization.

669488524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5399136 (or 5399134 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 52.

The square root of 669488524 is about 25874.4763038791. The cubic root of 669488524 is about 874.8112894808.

The spelling of 669488524 in words is "six hundred sixty-nine million, four hundred eighty-eight thousand, five hundred twenty-four".