622658009 has 2 divisors, whose sum is σ = 622658010. Its totient is φ = 622658008.

The previous prime is 622657957. The next prime is 622658011. The reversal of 622658009 is 900856226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 356152384 + 266505625 = 18872^2 + 16325^2 .

It is a cyclic number.

It is not a de Polignac number, because 622658009 - 2²⁰ = 621609433 is a prime.

Together with 622658011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (622658809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311329004 + 311329005.

It is an arithmetic number, because the mean of its divisors is an integer number (311329005).

Almost surely, 2^622658009 is an apocalyptic number.

It is an amenable number.

622658009 is a deficient number, since it is larger than the sum of its proper divisors (1).

622658009 is an equidigital number, since it uses as much as digits as its factorization.

622658009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 622658009 is about 24953.1162182201. The cubic root of 622658009 is about 853.9187037663.

The spelling of 622658009 in words is "six hundred twenty-two million, six hundred fifty-eight thousand, nine".