622660361 has 2 divisors, whose sum is σ = 622660362. Its totient is φ = 622660360.

The previous prime is 622660351. The next prime is 622660387. The reversal of 622660361 is 163066226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438651136 + 184009225 = 20944^2 + 13565^2 .

It is a cyclic number.

It is not a de Polignac number, because 622660361 - 2²⁶ = 555551497 is a prime.

It is a super-3 number, since 3×622660361³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (622660321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311330180 + 311330181.

It is an arithmetic number, because the mean of its divisors is an integer number (311330181).

Almost surely, 2^622660361 is an apocalyptic number.

It is an amenable number.

622660361 is a deficient number, since it is larger than the sum of its proper divisors (1).

622660361 is an equidigital number, since it uses as much as digits as its factorization.

622660361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 622660361 is about 24953.1633465579. The cubic root of 622660361 is about 853.9197789495.

The spelling of 622660361 in words is "six hundred twenty-two million, six hundred sixty thousand, three hundred sixty-one".