660923488 has 24 divisors (see below), whose sum is σ = 1302149520. Its totient is φ = 330218880.

The previous prime is 660923453. The next prime is 660923507. The reversal of 660923488 is 884329066.

It is a happy number.

It is a super-2 number, since 2×660923488² = 873639713980172288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41518 + ... + 55186.

It is an arithmetic number, because the mean of its divisors is an integer number (54256230).

Almost surely, 2^660923488 is an apocalyptic number.

It is an amenable number.

660923488 is a deficient number, since it is larger than the sum of its proper divisors (641226032).

660923488 is a wasteful number, since it uses less digits than its factorization.

660923488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190 (or 15182 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 660923488 is about 25708.4322353581. The cubic root of 660923488 is about 871.0646621499.

The spelling of 660923488 in words is "six hundred sixty million, nine hundred twenty-three thousand, four hundred eighty-eight".