660008488 has 16 divisors (see below), whose sum is σ = 1267699860. Its totient is φ = 321955200.

The previous prime is 660008473. The next prime is 660008497. The reversal of 660008488 is 884800066.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 642216964 + 17791524 = 25342^2 + 4218^2 .

It is a super-2 number, since 2×660008488² = 871222408464092288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660008488.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005783 + ... + 1006438.

Almost surely, 2^660008488 is an apocalyptic number.

It is an amenable number.

660008488 is a deficient number, since it is larger than the sum of its proper divisors (607691372).

660008488 is a wasteful number, since it uses less digits than its factorization.

660008488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012268 (or 2012264 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 660008488 is about 25690.6303542751. The cubic root of 660008488 is about 870.6625015012.

The spelling of 660008488 in words is "six hundred sixty million, eight thousand, four hundred eighty-eight".