668768099 has 8 divisors (see below), whose sum is σ = 713882880. Its totient is φ = 624645000.

The previous prime is 668768077. The next prime is 668768129. The reversal of 668768099 is 990867866.

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 668768099 - 2⁸ = 668767843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668768069) 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, 246527 + ... + 249224.

It is an arithmetic number, because the mean of its divisors is an integer number (89235360).

Almost surely, 2^668768099 is an apocalyptic number.

668768099 is a deficient number, since it is larger than the sum of its proper divisors (45114781).

668768099 is a wasteful number, since it uses less digits than its factorization.

668768099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495841.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The square root of 668768099 is about 25860.5510188782. The cubic root of 668768099 is about 874.4973871021.

The spelling of 668768099 in words is "six hundred sixty-eight million, seven hundred sixty-eight thousand, ninety-nine".