622265729 has 4 divisors (see below), whose sum is σ = 622325040. Its totient is φ = 622206420.

The previous prime is 622265719. The next prime is 622265753. The reversal of 622265729 is 927562226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622265729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622265719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9227 + ... + 36464.

It is an arithmetic number, because the mean of its divisors is an integer number (155581260).

Almost surely, 2^622265729 is an apocalyptic number.

It is an amenable number.

622265729 is a deficient number, since it is larger than the sum of its proper divisors (59311).

622265729 is a wasteful number, since it uses less digits than its factorization.

622265729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59310.

The product of its digits is 181440, while the sum is 41.

The square root of 622265729 is about 24945.2546389088. The cubic root of 622265729 is about 853.7393406731.

The spelling of 622265729 in words is "six hundred twenty-two million, two hundred sixty-five thousand, seven hundred twenty-nine".