16622 has 4 divisors (see below), whose sum is σ = 24936. Its totient is φ = 8310.

The previous prime is 16619. The next prime is 16631. The reversal of 16622 is 22661.

It is a semiprime because it is the product of two primes.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 16622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4154 + ... + 4157.

It is an arithmetic number, because the mean of its divisors is an integer number (6234).

2¹⁶⁶²² is an apocalyptic number.

16622 is a deficient number, since it is larger than the sum of its proper divisors (8314).

16622 is an equidigital number, since it uses as much as digits as its factorization.

16622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8313.

The product of its digits is 144, while the sum is 17.

The square root of 16622 is about 128.9263355564. The cubic root of 16622 is about 25.5208083391.

The spelling of 16622 in words is "sixteen thousand, six hundred twenty-two".