622867849 has 2 divisors, whose sum is σ = 622867850. Its totient is φ = 622867848.

The previous prime is 622867813. The next prime is 622867867. The reversal of 622867849 is 948768226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595116025 + 27751824 = 24395^2 + 5268^2 .

It is a cyclic number.

It is not a de Polignac number, because 622867849 - 2²⁷ = 488650121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 622867796 and 622867805.

It is not a weakly prime, because it can be changed into another prime (622867649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311433924 + 311433925.

It is an arithmetic number, because the mean of its divisors is an integer number (311433925).

Almost surely, 2^622867849 is an apocalyptic number.

It is an amenable number.

622867849 is a deficient number, since it is larger than the sum of its proper divisors (1).

622867849 is an equidigital number, since it uses as much as digits as its factorization.

622867849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 52.

The square root of 622867849 is about 24957.3205492897. The cubic root of 622867849 is about 854.0146184701.

The spelling of 622867849 in words is "six hundred twenty-two million, eight hundred sixty-seven thousand, eight hundred forty-nine".