622311901 has 2 divisors, whose sum is σ = 622311902. Its totient is φ = 622311900.

The previous prime is 622311871. The next prime is 622311919. The reversal of 622311901 is 109113226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608806276 + 13505625 = 24674^2 + 3675^2 .

It is a cyclic number.

It is not a de Polignac number, because 622311901 - 2²³ = 613923293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622311931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311155950 + 311155951.

It is an arithmetic number, because the mean of its divisors is an integer number (311155951).

Almost surely, 2^622311901 is an apocalyptic number.

It is an amenable number.

622311901 is a deficient number, since it is larger than the sum of its proper divisors (1).

622311901 is an equidigital number, since it uses as much as digits as its factorization.

622311901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 622311901 is about 24946.1800883422. The cubic root of 622311901 is about 853.7604559170.

The spelling of 622311901 in words is "six hundred twenty-two million, three hundred eleven thousand, nine hundred one".