22166887 has 8 divisors (see below), whose sum is σ = 22809600. Its totient is φ = 21530040.

The previous prime is 22166843. The next prime is 22166899. The reversal of 22166887 is 78866122.

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 22166887 - 2¹¹ = 22164839 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 (22166087) 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, 6864 + ... + 9562.

It is an arithmetic number, because the mean of its divisors is an integer number (2851200).

Almost surely, 2^22166887 is an apocalyptic number.

22166887 is a deficient number, since it is larger than the sum of its proper divisors (642713).

22166887 is a wasteful number, since it uses less digits than its factorization.

22166887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933.

The product of its digits is 64512, while the sum is 40.

The square root of 22166887 is about 4708.1723630301. The cubic root of 22166887 is about 280.9106701356.

The spelling of 22166887 in words is "twenty-two million, one hundred sixty-six thousand, eight hundred eighty-seven".