16422605 has 4 divisors (see below), whose sum is σ = 19707132. Its totient is φ = 13138080.

The previous prime is 16422587. The next prime is 16422607. The reversal of 16422605 is 50622461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50622461 = 131 ⋅386431.

It can be written as a sum of positive squares in 2 ways, for example, as 11485321 + 4937284 = 3389^2 + 2222^2 .

It is not a de Polignac number, because 16422605 - 2⁸ = 16422349 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 (16422607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642256 + ... + 1642265.

It is an arithmetic number, because the mean of its divisors is an integer number (4926783).

Almost surely, 2^16422605 is an apocalyptic number.

It is an amenable number.

16422605 is a deficient number, since it is larger than the sum of its proper divisors (3284527).

16422605 is an equidigital number, since it uses as much as digits as its factorization.

16422605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284526.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 16422605 is about 4052.4813386369. The cubic root of 16422605 is about 254.1834962728.

The spelling of 16422605 in words is "sixteen million, four hundred twenty-two thousand, six hundred five".