220862609 has 4 divisors (see below), whose sum is σ = 240941040. Its totient is φ = 200784180.

The previous prime is 220862581. The next prime is 220862633. The reversal of 220862609 is 906268022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220862609 - 2²⁰ = 219814033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220862809) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10039199 + ... + 10039220.

It is an arithmetic number, because the mean of its divisors is an integer number (60235260).

Almost surely, 2^220862609 is an apocalyptic number.

It is an amenable number.

220862609 is a deficient number, since it is larger than the sum of its proper divisors (20078431).

220862609 is a wasteful number, since it uses less digits than its factorization.

220862609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20078430.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 220862609 is about 14861.4470695151. The cubic root of 220862609 is about 604.4690458109.

The spelling of 220862609 in words is "two hundred twenty million, eight hundred sixty-two thousand, six hundred nine".