668433 has 8 divisors (see below), whose sum is σ = 896896. Its totient is φ = 442800.

The previous prime is 668417. The next prime is 668471. The reversal of 668433 is 334866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 668433 - 2⁴ = 668417 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 668433.

It is not an unprimeable number, because it can be changed into a prime (668033) 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, 73 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (112112).

2⁶⁶⁸⁴³³ is an apocalyptic number.

It is an amenable number.

668433 is a deficient number, since it is larger than the sum of its proper divisors (228463).

668433 is a wasteful number, since it uses less digits than its factorization.

668433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415.

The product of its digits is 10368, while the sum is 30.

The square root of 668433 is about 817.5775192604. The cubic root of 668433 is about 87.4351301506.

The spelling of 668433 in words is "six hundred sixty-eight thousand, four hundred thirty-three".