668508883 has 8 divisors (see below), whose sum is σ = 764225280. Its totient is φ = 572846280.

The previous prime is 668508853. The next prime is 668508889. The reversal of 668508883 is 388805866.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 668508883 - 2⁹ = 668508371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 668508883.

It is not an unprimeable number, because it can be changed into a prime (668508889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18138 + ... + 40816.

It is an arithmetic number, because the mean of its divisors is an integer number (95528160).

Almost surely, 2^668508883 is an apocalyptic number.

668508883 is a deficient number, since it is larger than the sum of its proper divisors (95716397).

668508883 is a wasteful number, since it uses less digits than its factorization.

668508883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26897.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The square root of 668508883 is about 25855.5387296417. The cubic root of 668508883 is about 874.3843867915.

The spelling of 668508883 in words is "six hundred sixty-eight million, five hundred eight thousand, eight hundred eighty-three".