669508488 has 288 divisors, whose sum is σ = 2144513280. Its totient is φ = 188179200.

The previous prime is 669508439. The next prime is 669508507. The reversal of 669508488 is 884805966.

It is a happy number.

It is a super-2 number, since 2×669508488² = 896483231008092288, which contains 22 as substring.

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 71 ways as a sum of consecutive naturals, for example, 9992631 + ... + 9992697.

Almost surely, 2^669508488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669508488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072256640).

669508488 is an abundant number, since it is smaller than the sum of its proper divisors (1475004792).

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

669508488 is a wasteful number, since it uses less digits than its factorization.

669508488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The square root of 669508488 is about 25874.8620865890. The cubic root of 669508488 is about 874.8199849542.

The spelling of 669508488 in words is "six hundred sixty-nine million, five hundred eight thousand, four hundred eighty-eight".