668596946 has 8 divisors (see below), whose sum is σ = 1003017600. Its totient is φ = 334257748.

The previous prime is 668596897. The next prime is 668596967. The reversal of 668596946 is 649695866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8135 + ... + 37461.

It is an arithmetic number, because the mean of its divisors is an integer number (125377200).

Almost surely, 2^668596946 is an apocalyptic number.

668596946 is a deficient number, since it is larger than the sum of its proper divisors (334420654).

668596946 is a wasteful number, since it uses less digits than its factorization.

668596946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40728.

The product of its digits is 16796160, while the sum is 59.

The square root of 668596946 is about 25857.2416549020. The cubic root of 668596946 is about 874.4227794658.

The spelling of 668596946 in words is "six hundred sixty-eight million, five hundred ninety-six thousand, nine hundred forty-six".