2192605 has 4 divisors (see below), whose sum is σ = 2631132. Its totient is φ = 1754080.

The previous prime is 2192591. The next prime is 2192621. The reversal of 2192605 is 5062912.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1643524 + 549081 = 1282^2 + 741^2 .

It is not a de Polignac number, because 2192605 - 2⁵ = 2192573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2192605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219256 + ... + 219265.

It is an arithmetic number, because the mean of its divisors is an integer number (657783).

2^2192605 is an apocalyptic number.

It is an amenable number.

2192605 is a deficient number, since it is larger than the sum of its proper divisors (438527).

2192605 is an equidigital number, since it uses as much as digits as its factorization.

2192605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438526.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2192605 is about 1480.7447450523. The cubic root of 2192605 is about 129.9132557411.

The spelling of 2192605 in words is "two million, one hundred ninety-two thousand, six hundred five".