668098235 has 16 divisors (see below), whose sum is σ = 964473600. Its totient is φ = 434012256.

The previous prime is 668098229. The next prime is 668098243. The reversal of 668098235 is 532890866.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 668098235 - 2¹⁰ = 668097211 is a prime.

It is a super-2 number, since 2×668098235² = 892710503220230450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 668098235.

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 15 ways as a sum of consecutive naturals, for example, 501665 + ... + 502994.

It is an arithmetic number, because the mean of its divisors is an integer number (60279600).

Almost surely, 2^668098235 is an apocalyptic number.

668098235 is a deficient number, since it is larger than the sum of its proper divisors (296375365).

668098235 is a wasteful number, since it uses less digits than its factorization.

668098235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004690.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 668098235 is about 25847.5963099086. The cubic root of 668098235 is about 874.2053127581.

The spelling of 668098235 in words is "six hundred sixty-eight million, ninety-eight thousand, two hundred thirty-five".