622658081 has 2 divisors, whose sum is σ = 622658082. Its totient is φ = 622658080.

The previous prime is 622658053. The next prime is 622658083. The reversal of 622658081 is 180856226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622003600 + 654481 = 24940^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 622658081 - 2²² = 618463777 is a prime.

It is a super-2 number, since 2×622658081² = 775406171669205122, which contains 22 as substring.

Together with 622658083, 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 (622658083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311329040 + 311329041.

It is an arithmetic number, because the mean of its divisors is an integer number (311329041).

Almost surely, 2^622658081 is an apocalyptic number.

It is an amenable number.

622658081 is a deficient number, since it is larger than the sum of its proper divisors (1).

622658081 is an equidigital number, since it uses as much as digits as its factorization.

622658081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 622658081 is about 24953.1176609257. The cubic root of 622658081 is about 853.9187366801.

The spelling of 622658081 in words is "six hundred twenty-two million, six hundred fifty-eight thousand, eighty-one".