322645663 has 2 divisors, whose sum is σ = 322645664. Its totient is φ = 322645662.

The previous prime is 322645621. The next prime is 322645667. The reversal of 322645663 is 366546223.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322645663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (322645667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161322831 + 161322832.

It is an arithmetic number, because the mean of its divisors is an integer number (161322832).

Almost surely, 2^322645663 is an apocalyptic number.

322645663 is a deficient number, since it is larger than the sum of its proper divisors (1).

322645663 is an equidigital number, since it uses as much as digits as its factorization.

322645663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 37.

The square root of 322645663 is about 17962.3401315085. The cubic root of 322645663 is about 685.8702158804.

The spelling of 322645663 in words is "three hundred twenty-two million, six hundred forty-five thousand, six hundred sixty-three".