668587124 has 12 divisors (see below), whose sum is σ = 1231608000. Its totient is φ = 316699128.

The previous prime is 668587121. The next prime is 668587133. The reversal of 668587124 is 421785866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668587121) by changing a digit.

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, 4398524 + ... + 4398675.

It is an arithmetic number, because the mean of its divisors is an integer number (102634000).

Almost surely, 2^668587124 is an apocalyptic number.

It is an amenable number.

668587124 is a deficient number, since it is larger than the sum of its proper divisors (563020876).

668587124 is a wasteful number, since it uses less digits than its factorization.

668587124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797222 (or 8797220 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 668587124 is about 25857.0517267534. The cubic root of 668587124 is about 874.4184975524.

The spelling of 668587124 in words is "six hundred sixty-eight million, five hundred eighty-seven thousand, one hundred twenty-four".