622036809 has 6 divisors (see below), whose sum is σ = 898497626. Its totient is φ = 414691200.

The previous prime is 622036739. The next prime is 622036813. The reversal of 622036809 is 908630226.

It can be written as a sum of positive squares in only one way, i.e., 579461184 + 42575625 = 24072^2 + 6525^2 .

It is not a de Polignac number, because 622036809 - 2⁸ = 622036553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622026809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34557592 + ... + 34557609.

Almost surely, 2^622036809 is an apocalyptic number.

It is an amenable number.

622036809 is a deficient number, since it is larger than the sum of its proper divisors (276460817).

622036809 is a wasteful number, since it uses less digits than its factorization.

622036809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69115207 (or 69115204 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 622036809 is about 24940.6657689806. The cubic root of 622036809 is about 853.6346362188.

The spelling of 622036809 in words is "six hundred twenty-two million, thirty-six thousand, eight hundred nine".