622669321 has 2 divisors, whose sum is σ = 622669322. Its totient is φ = 622669320.

The previous prime is 622669241. The next prime is 622669339. The reversal of 622669321 is 123966226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402443721 + 220225600 = 20061^2 + 14840^2 .

It is a cyclic number.

It is not a de Polignac number, because 622669321 - 2²⁹ = 85798409 is a prime.

It is not a weakly prime, because it can be changed into another prime (622669381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311334660 + 311334661.

It is an arithmetic number, because the mean of its divisors is an integer number (311334661).

Almost surely, 2^622669321 is an apocalyptic number.

It is an amenable number.

622669321 is a deficient number, since it is larger than the sum of its proper divisors (1).

622669321 is an equidigital number, since it uses as much as digits as its factorization.

622669321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 622669321 is about 24953.3428822673. The cubic root of 622669321 is about 853.9238748606.

The spelling of 622669321 in words is "six hundred twenty-two million, six hundred sixty-nine thousand, three hundred twenty-one".