622403309 has 12 divisors (see below), whose sum is σ = 690916380. Its totient is φ = 560208000.

The previous prime is 622403297. The next prime is 622403321. The reversal of 622403309 is 903304226.

It is an interprime number because it is at equal distance from previous prime (622403297) and next prime (622403321).

It can be written as a sum of positive squares in 2 ways, for example, as 321484900 + 300918409 = 17930^2 + 17347^2 .

It is not a de Polignac number, because 622403309 - 2¹⁶ = 622337773 is a prime.

It is a super-3 number, since 3×622403309³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622403339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13244 + ... + 37685.

It is an arithmetic number, because the mean of its divisors is an integer number (57576365).

Almost surely, 2^622403309 is an apocalyptic number.

It is an amenable number.

622403309 is a deficient number, since it is larger than the sum of its proper divisors (68513071).

622403309 is a wasteful number, since it uses less digits than its factorization.

622403309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51052 (or 51041 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 622403309 is about 24948.0121252175. The cubic root of 622403309 is about 853.8022552757.

The spelling of 622403309 in words is "six hundred twenty-two million, four hundred three thousand, three hundred nine".