668460323 has 4 divisors (see below), whose sum is σ = 670179120. Its totient is φ = 666741528.

The previous prime is 668460301. The next prime is 668460329. The reversal of 668460323 is 323064866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 668460323 - 2⁶ = 668460259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668460329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858815 + ... + 859592.

It is an arithmetic number, because the mean of its divisors is an integer number (167544780).

Almost surely, 2^668460323 is an apocalyptic number.

668460323 is a deficient number, since it is larger than the sum of its proper divisors (1718797).

668460323 is a wasteful number, since it uses less digits than its factorization.

668460323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718796.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 668460323 is about 25854.5996488052. The cubic root of 668460323 is about 874.3632147298.

The spelling of 668460323 in words is "six hundred sixty-eight million, four hundred sixty thousand, three hundred twenty-three".