622055556 has 36 divisors (see below), whose sum is σ = 1573474812. Its totient is φ = 207212544.

The previous prime is 622055549. The next prime is 622055569. The reversal of 622055556 is 655550226.

It can be written as a sum of positive squares in 2 ways, for example, as 99201600 + 522853956 = 9960^2 + 22866^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×622055556² = 773906229500938272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 622055556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58180 + ... + 68036.

Almost surely, 2^622055556 is an apocalyptic number.

It is an amenable number.

622055556 is an abundant number, since it is smaller than the sum of its proper divisors (951419256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

622055556 is a wasteful number, since it uses less digits than its factorization.

622055556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11620 (or 11615 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The square root of 622055556 is about 24941.0415981370. The cubic root of 622055556 is about 853.6432117712.

It can be divided in two parts, 6220 and 55556, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 622055556 in words is "six hundred twenty-two million, fifty-five thousand, five hundred fifty-six".