622491361 has 2 divisors, whose sum is σ = 622491362. Its totient is φ = 622491360.

The previous prime is 622491301. The next prime is 622491379. The reversal of 622491361 is 163194226.

It is a happy number.

622491361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 617224336 + 5267025 = 24844^2 + 2295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622491361 is a prime.

It is not a weakly prime, because it can be changed into another prime (622491301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311245680 + 311245681.

It is an arithmetic number, because the mean of its divisors is an integer number (311245681).

Almost surely, 2^622491361 is an apocalyptic number.

It is an amenable number.

622491361 is a deficient number, since it is larger than the sum of its proper divisors (1).

622491361 is an equidigital number, since it uses as much as digits as its factorization.

622491361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 622491361 is about 24949.7767725485. The cubic root of 622491361 is about 853.8425161216.

The spelling of 622491361 in words is "six hundred twenty-two million, four hundred ninety-one thousand, three hundred sixty-one".