320622641 has 4 divisors (see below), whose sum is σ = 320848752. Its totient is φ = 320396532.

The previous prime is 320622613. The next prime is 320622683. The reversal of 320622641 is 146226023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320622641 - 2¹⁰ = 320621617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320622641.

It is not an unprimeable number, because it can be changed into a prime (320622241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110915 + ... + 113768.

It is an arithmetic number, because the mean of its divisors is an integer number (80212188).

Almost surely, 2^320622641 is an apocalyptic number.

It is an amenable number.

320622641 is a deficient number, since it is larger than the sum of its proper divisors (226111).

320622641 is a wasteful number, since it uses less digits than its factorization.

320622641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226110.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 320622641 is about 17905.9387075908. The cubic root of 320622641 is about 684.4337167250.

Adding to 320622641 its reverse (146226023), we get a palindrome (466848664).

The spelling of 320622641 in words is "three hundred twenty million, six hundred twenty-two thousand, six hundred forty-one".