320942663 has 8 divisors (see below), whose sum is σ = 326110320. Its totient is φ = 315786240.

The previous prime is 320942653. The next prime is 320942683. The reversal of 320942663 is 366249023.

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

It is a cyclic number.

It is not a de Polignac number, because 320942663 - 2⁴ = 320942647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320942653) 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, 69383 + ... + 73863.

It is an arithmetic number, because the mean of its divisors is an integer number (40763790).

Almost surely, 2^320942663 is an apocalyptic number.

320942663 is a deficient number, since it is larger than the sum of its proper divisors (5167657).

320942663 is a wasteful number, since it uses less digits than its factorization.

320942663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 320942663 is about 17914.8726760756. The cubic root of 320942663 is about 684.6613581792.

The spelling of 320942663 in words is "three hundred twenty million, nine hundred forty-two thousand, six hundred sixty-three".