220622509 has 8 divisors (see below), whose sum is σ = 242331840. Its totient is φ = 199922976.

The previous prime is 220622497. The next prime is 220622539. The reversal of 220622509 is 905226022.

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 220622509 - 2⁵ = 220622477 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 (220622539) 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, 251992 + ... + 252865.

It is an arithmetic number, because the mean of its divisors is an integer number (30291480).

Almost surely, 2^220622509 is an apocalyptic number.

It is an amenable number.

220622509 is a deficient number, since it is larger than the sum of its proper divisors (21709331).

220622509 is a wasteful number, since it uses less digits than its factorization.

220622509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504899.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 220622509 is about 14853.3669247077. The cubic root of 220622509 is about 604.2499267218.

The spelling of 220622509 in words is "two hundred twenty million, six hundred twenty-two thousand, five hundred nine".