668574235 has 32 divisors (see below), whose sum is σ = 968970240. Its totient is φ = 432926208.

The previous prime is 668574233. The next prime is 668574251. The reversal of 668574235 is 532475866.

It is a cyclic number.

It is not a de Polignac number, because 668574235 - 2¹ = 668574233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (668574233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58339 + ... + 68851.

It is an arithmetic number, because the mean of its divisors is an integer number (30280320).

Almost surely, 2^668574235 is an apocalyptic number.

668574235 is a deficient number, since it is larger than the sum of its proper divisors (300396005).

668574235 is a wasteful number, since it uses less digits than its factorization.

668574235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10627.

The product of its digits is 1209600, while the sum is 46.

The square root of 668574235 is about 25856.8024898671. The cubic root of 668574235 is about 874.4128785129.

The spelling of 668574235 in words is "six hundred sixty-eight million, five hundred seventy-four thousand, two hundred thirty-five".