622509954049 has 3 divisors (see below), whose sum is σ = 622510743043. Its totient is φ = 622509165056.

The previous prime is 622509954023. The next prime is 622509954097. The reversal of 622509954049 is 940459905226.

The square root of 622509954049 is 788993.

It is a perfect power (a square), and thus also a powerful number.

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 only one way, i.e., 150222132225 + 472287821824 = 387585^2 + 687232^2 .

It is not a de Polignac number, because 622509954049 - 2¹⁵ = 622509921281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622509952049) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 394497 + ... + 1183489.

Almost surely, 2^622509954049 is an apocalyptic number.

622509954049 is the 788993-rd square number.

622509954049 is the 394497-th centered octagonal number.

It is an amenable number.

622509954049 is a deficient number, since it is larger than the sum of its proper divisors (788994).

622509954049 is an frugal number, since it uses more digits than its factorization.

622509954049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577986 (or 788993 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 622509954049 in words is "six hundred twenty-two billion, five hundred nine million, nine hundred fifty-four thousand, forty-nine".