622809812 has 6 divisors (see below), whose sum is σ = 1089917178. Its totient is φ = 311404904.

The previous prime is 622809769. The next prime is 622809833. The reversal of 622809812 is 218908226.

622809812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 616826896 + 5982916 = 24836^2 + 2446^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77851223 + ... + 77851230.

It is an arithmetic number, because the mean of its divisors is an integer number (181652863).

Almost surely, 2^622809812 is an apocalyptic number.

It is an amenable number.

622809812 is a deficient number, since it is larger than the sum of its proper divisors (467107366).

622809812 is a wasteful number, since it uses less digits than its factorization.

622809812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155702457 (or 155702455 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 622809812 is about 24956.1577972251. The cubic root of 622809812 is about 853.9880927868.

The spelling of 622809812 in words is "six hundred twenty-two million, eight hundred nine thousand, eight hundred twelve".