622767247 has 2 divisors, whose sum is σ = 622767248. Its totient is φ = 622767246.

The previous prime is 622767221. The next prime is 622767263. The reversal of 622767247 is 742767226.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622767247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622768247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311383623 + 311383624.

It is an arithmetic number, because the mean of its divisors is an integer number (311383624).

Almost surely, 2^622767247 is an apocalyptic number.

622767247 is a deficient number, since it is larger than the sum of its proper divisors (1).

622767247 is an equidigital number, since it uses as much as digits as its factorization.

622767247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 43.

The square root of 622767247 is about 24955.3049871165. The cubic root of 622767247 is about 853.9686374996.

The spelling of 622767247 in words is "six hundred twenty-two million, seven hundred sixty-seven thousand, two hundred forty-seven".