622737881 has 2 divisors, whose sum is σ = 622737882. Its totient is φ = 622737880.

The previous prime is 622737877. The next prime is 622737917. The reversal of 622737881 is 188737226.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547326025 + 75411856 = 23395^2 + 8684^2 .

It is a cyclic number.

It is not a de Polignac number, because 622737881 - 2² = 622737877 is a prime.

It is a super-2 number, since 2×622737881² = 775604936864740322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (622737781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311368940 + 311368941.

It is an arithmetic number, because the mean of its divisors is an integer number (311368941).

Almost surely, 2^622737881 is an apocalyptic number.

It is an amenable number.

622737881 is a deficient number, since it is larger than the sum of its proper divisors (1).

622737881 is an equidigital number, since it uses as much as digits as its factorization.

622737881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 622737881 is about 24954.7166082887. The cubic root of 622737881 is about 853.9552145944.

The spelling of 622737881 in words is "six hundred twenty-two million, seven hundred thirty-seven thousand, eight hundred eighty-one".