622216505 has 4 divisors (see below), whose sum is σ = 746659812. Its totient is φ = 497773200.

The previous prime is 622216453. The next prime is 622216549. The reversal of 622216505 is 505612226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79512889 + 542703616 = 8917^2 + 23296^2 .

It is not a de Polignac number, because 622216505 - 2²⁰ = 621167929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 62221646 + ... + 62221655.

It is an arithmetic number, because the mean of its divisors is an integer number (186664953).

Almost surely, 2^622216505 is an apocalyptic number.

It is an amenable number.

622216505 is a deficient number, since it is larger than the sum of its proper divisors (124443307).

622216505 is a wasteful number, since it uses less digits than its factorization.

622216505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124443306.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 622216505 is about 24944.2679788363. The cubic root of 622216505 is about 853.7168285471.

The spelling of 622216505 in words is "six hundred twenty-two million, two hundred sixteen thousand, five hundred five".