22164665 has 8 divisors (see below), whose sum is σ = 27316680. Its totient is φ = 17252352.

The previous prime is 22164647. The next prime is 22164677. The reversal of 22164665 is 56646122.

It can be written as a sum of positive squares in 4 ways, for example, as 12752041 + 9412624 = 3571^2 + 3068^2 .

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 22164665 - 2⁶ = 22164601 is a prime.

It is a Curzon number.

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, 59720 + ... + 60089.

It is an arithmetic number, because the mean of its divisors is an integer number (3414585).

Almost surely, 2^22164665 is an apocalyptic number.

It is an amenable number.

22164665 is a deficient number, since it is larger than the sum of its proper divisors (5152015).

22164665 is a wasteful number, since it uses less digits than its factorization.

22164665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119851.

The product of its digits is 17280, while the sum is 32.

The square root of 22164665 is about 4707.9363844470. The cubic root of 22164665 is about 280.9012836970.

The spelling of 22164665 in words is "twenty-two million, one hundred sixty-four thousand, six hundred sixty-five".