622736309 has 8 divisors (see below), whose sum is σ = 674116632. Its totient is φ = 571852800.

The previous prime is 622736297. The next prime is 622736311. The reversal of 622736309 is 903637226.

It can be written as a sum of positive squares in 4 ways, for example, as 84100 + 622652209 = 290^2 + 24953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 622736309 - 2²⁴ = 605959093 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 (622736369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121592 + ... + 126609.

It is an arithmetic number, because the mean of its divisors is an integer number (84264579).

Almost surely, 2^622736309 is an apocalyptic number.

It is an amenable number.

622736309 is a deficient number, since it is larger than the sum of its proper divisors (51380323).

622736309 is a wasteful number, since it uses less digits than its factorization.

622736309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248407.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 622736309 is about 24954.6851112171. The cubic root of 622736309 is about 853.9544960370.

The spelling of 622736309 in words is "six hundred twenty-two million, seven hundred thirty-six thousand, three hundred nine".