622783507349 has 4 divisors (see below), whose sum is σ = 624631529964. Its totient is φ = 620935484736.

The previous prime is 622783507261. The next prime is 622783507361. The reversal of 622783507349 is 943705387226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 283442306449 + 339341200900 = 532393^2 + 582530^2 .

It is a cyclic number.

It is not a de Polignac number, because 622783507349 - 2²⁰ = 622782458773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 622783507294 and 622783507303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622783507369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924010802 + ... + 924011475.

It is an arithmetic number, because the mean of its divisors is an integer number (156157882491).

Almost surely, 2^622783507349 is an apocalyptic number.

It is an amenable number.

622783507349 is a deficient number, since it is larger than the sum of its proper divisors (1848022615).

622783507349 is a wasteful number, since it uses less digits than its factorization.

622783507349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848022614.

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 622783507349 in words is "six hundred twenty-two billion, seven hundred eighty-three million, five hundred seven thousand, three hundred forty-nine".