323668663 has 4 divisors (see below), whose sum is σ = 323775880. Its totient is φ = 323561448.

The previous prime is 323668621. The next prime is 323668699. The reversal of 323668663 is 366866323.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323668663 is a prime.

It is a super-2 number, since 2×323668663² = 209522806816415138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323665663) 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, 48945 + ... + 55162.

It is an arithmetic number, because the mean of its divisors is an integer number (80943970).

Almost surely, 2^323668663 is an apocalyptic number.

323668663 is a deficient number, since it is larger than the sum of its proper divisors (107217).

323668663 is a wasteful number, since it uses less digits than its factorization.

323668663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107216.

The product of its digits is 559872, while the sum is 43.

The square root of 323668663 is about 17990.7938401839. The cubic root of 323668663 is about 686.5943384035.

The spelling of 323668663 in words is "three hundred twenty-three million, six hundred sixty-eight thousand, six hundred sixty-three".