668930235 has 16 divisors (see below), whose sum is σ = 1073049120. Its totient is φ = 355842560.

The previous prime is 668930233. The next prime is 668930239. The reversal of 668930235 is 532039866.

It is not a de Polignac number, because 668930235 - 2¹ = 668930233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668930233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51486 + ... + 63155.

It is an arithmetic number, because the mean of its divisors is an integer number (67065570).

Almost surely, 2^668930235 is an apocalyptic number.

668930235 is a deficient number, since it is larger than the sum of its proper divisors (404118885).

668930235 is a wasteful number, since it uses less digits than its factorization.

668930235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115038.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 668930235 is about 25863.6856422282. The cubic root of 668930235 is about 874.5680523805.

The spelling of 668930235 in words is "six hundred sixty-eight million, nine hundred thirty thousand, two hundred thirty-five".