320654663 has 8 divisors (see below), whose sum is σ = 388019232. Its totient is φ = 258679296.

The previous prime is 320654657. The next prime is 320654681. The reversal of 320654663 is 366456023.

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 320654663 - 2¹⁰ = 320653639 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 (320659663) 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, 1347170 + ... + 1347407.

It is an arithmetic number, because the mean of its divisors is an integer number (48502404).

Almost surely, 2^320654663 is an apocalyptic number.

320654663 is a deficient number, since it is larger than the sum of its proper divisors (67364569).

320654663 is a wasteful number, since it uses less digits than its factorization.

320654663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694601.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 320654663 is about 17906.8328578786. The cubic root of 320654663 is about 684.4565017731.

The spelling of 320654663 in words is "three hundred twenty million, six hundred fifty-four thousand, six hundred sixty-three".