622839797 has 4 divisors (see below), whose sum is σ = 622890156. Its totient is φ = 622789440.

The previous prime is 622839787. The next prime is 622839803. The reversal of 622839797 is 797938226.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 201810436 + 421029361 = 14206^2 + 20519^2 .

It is a cyclic number.

It is not a de Polignac number, because 622839797 - 2⁴ = 622839781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622839787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7583 + ... + 36099.

It is an arithmetic number, because the mean of its divisors is an integer number (155722539).

Almost surely, 2^622839797 is an apocalyptic number.

It is an amenable number.

622839797 is a deficient number, since it is larger than the sum of its proper divisors (50359).

622839797 is a wasteful number, since it uses less digits than its factorization.

622839797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50358.

The product of its digits is 2286144, while the sum is 53.

The square root of 622839797 is about 24956.7585435288. The cubic root of 622839797 is about 854.0017975709.

The spelling of 622839797 in words is "six hundred twenty-two million, eight hundred thirty-nine thousand, seven hundred ninety-seven".