22180609 has 4 divisors (see below), whose sum is σ = 24197040. Its totient is φ = 20164180.

The previous prime is 22180607. The next prime is 22180661. The reversal of 22180609 is 90608122.

It is a happy number.

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 22180609 - 2¹ = 22180607 is a prime.

It is a super-2 number, since 2×22180609² = 983958831221762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22180601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008199 + ... + 1008220.

It is an arithmetic number, because the mean of its divisors is an integer number (6049260).

Almost surely, 2^22180609 is an apocalyptic number.

It is an amenable number.

22180609 is a deficient number, since it is larger than the sum of its proper divisors (2016431).

22180609 is a wasteful number, since it uses less digits than its factorization.

22180609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016430.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 22180609 is about 4709.6293909394. The cubic root of 22180609 is about 280.9686223581.

The spelling of 22180609 in words is "twenty-two million, one hundred eighty thousand, six hundred nine".