622397537 has 2 divisors, whose sum is σ = 622397538. Its totient is φ = 622397536.

The previous prime is 622397527. The next prime is 622397543. The reversal of 622397537 is 735793226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534488161 + 87909376 = 23119^2 + 9376^2 .

It is a cyclic number.

It is not a de Polignac number, because 622397537 - 2¹⁶ = 622332001 is a prime.

It is not a weakly prime, because it can be changed into another prime (622397527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311198768 + 311198769.

It is an arithmetic number, because the mean of its divisors is an integer number (311198769).

Almost surely, 2^622397537 is an apocalyptic number.

It is an amenable number.

622397537 is a deficient number, since it is larger than the sum of its proper divisors (1).

622397537 is an equidigital number, since it uses as much as digits as its factorization.

622397537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 44.

The square root of 622397537 is about 24947.8964443899. The cubic root of 622397537 is about 853.7996159571.

The spelling of 622397537 in words is "six hundred twenty-two million, three hundred ninety-seven thousand, five hundred thirty-seven".