622244881 has 2 divisors, whose sum is σ = 622244882. Its totient is φ = 622244880.

The previous prime is 622244869. The next prime is 622244893. The reversal of 622244881 is 188442226.

It is a balanced prime because it is at equal distance from previous prime (622244869) and next prime (622244893).

It can be written as a sum of positive squares in only one way, i.e., 588790225 + 33454656 = 24265^2 + 5784^2 .

It is a cyclic number.

It is not a de Polignac number, because 622244881 - 2¹¹ = 622242833 is a prime.

It is a super-2 number, since 2×622244881² = 774377383861408322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 622244881.

It is not a weakly prime, because it can be changed into another prime (622244801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311122440 + 311122441.

It is an arithmetic number, because the mean of its divisors is an integer number (311122441).

Almost surely, 2^622244881 is an apocalyptic number.

622244881 is the 15777-th centered pentagonal number.

It is an amenable number.

622244881 is a deficient number, since it is larger than the sum of its proper divisors (1).

622244881 is an equidigital number, since it uses as much as digits as its factorization.

622244881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49152, while the sum is 37.

The square root of 622244881 is about 24944.8367603398. The cubic root of 622244881 is about 853.7298061845.

The spelling of 622244881 in words is "six hundred twenty-two million, two hundred forty-four thousand, eight hundred eighty-one".