2194685 has 4 divisors (see below), whose sum is σ = 2633628. Its totient is φ = 1755744.

The previous prime is 2194679. The next prime is 2194697. The reversal of 2194685 is 5864912.

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 649636 + 1545049 = 806^2 + 1243^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194685 - 2⁸ = 2194429 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

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, 219464 + ... + 219473.

It is an arithmetic number, because the mean of its divisors is an integer number (658407).

2^2194685 is an apocalyptic number.

It is an amenable number.

2194685 is a deficient number, since it is larger than the sum of its proper divisors (438943).

2194685 is an equidigital number, since it uses as much as digits as its factorization.

2194685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438942.

The product of its digits is 17280, while the sum is 35.

The square root of 2194685 is about 1481.4469278378. The cubic root of 2194685 is about 129.9543232034.

The spelling of 2194685 in words is "two million, one hundred ninety-four thousand, six hundred eighty-five".