668983041 has 24 divisors (see below), whose sum is σ = 979190784. Its totient is φ = 440082720.

The previous prime is 668983033. The next prime is 668983057. The reversal of 668983041 is 140389866.

It is not a de Polignac number, because 668983041 - 2³ = 668983033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668981041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223686 + ... + 226656.

It is an arithmetic number, because the mean of its divisors is an integer number (40799616).

Almost surely, 2^668983041 is an apocalyptic number.

It is an amenable number.

668983041 is a deficient number, since it is larger than the sum of its proper divisors (310207743).

668983041 is a wasteful number, since it uses less digits than its factorization.

668983041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301 (or 3298 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 668983041 is about 25864.7064742672. The cubic root of 668983041 is about 874.5910648577.

The spelling of 668983041 in words is "six hundred sixty-eight million, nine hundred eighty-three thousand, forty-one".