16422665 has 8 divisors (see below), whose sum is σ = 22522560. Its totient is φ = 11261232.

The previous prime is 16422661. The next prime is 16422677. The reversal of 16422665 is 56622461.

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 16422665 - 2² = 16422661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16422661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234575 + ... + 234644.

It is an arithmetic number, because the mean of its divisors is an integer number (2815320).

Almost surely, 2^16422665 is an apocalyptic number.

It is an amenable number.

16422665 is a deficient number, since it is larger than the sum of its proper divisors (6099895).

16422665 is an equidigital number, since it uses as much as digits as its factorization.

16422665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469231.

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

The square root of 16422665 is about 4052.4887415019. The cubic root of 16422665 is about 254.1838058256.

The spelling of 16422665 in words is "sixteen million, four hundred twenty-two thousand, six hundred sixty-five".