22611985 has 8 divisors (see below), whose sum is σ = 29601216. Its totient is φ = 16445040.

The previous prime is 22611959. The next prime is 22611997. The reversal of 22611985 is 58911622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22611985 - 2⁹ = 22611473 is a prime.

It is a super-2 number, since 2×22611985² = 1022603731280450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22611985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205509 + ... + 205618.

It is an arithmetic number, because the mean of its divisors is an integer number (3700152).

Almost surely, 2^22611985 is an apocalyptic number.

It is an amenable number.

22611985 is a deficient number, since it is larger than the sum of its proper divisors (6989231).

22611985 is a wasteful number, since it uses less digits than its factorization.

22611985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411143.

The product of its digits is 8640, while the sum is 34.

The square root of 22611985 is about 4755.2060943770. The cubic root of 22611985 is about 282.7783978599.

The spelling of 22611985 in words is "twenty-two million, six hundred eleven thousand, nine hundred eighty-five".