2204681 has 4 divisors (see below), whose sum is σ = 2208000. Its totient is φ = 2201364.

The previous prime is 2204677. The next prime is 2204687. The reversal of 2204681 is 1864022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2204681 - 2² = 2204677 is a prime.

It is a super-2 number, since 2×2204681² = 9721236623522, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁹ + 2¹⁹ + 0 + 4⁴ + 6⁸ + 8 + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2204687) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 281 + ... + 2118.

It is an arithmetic number, because the mean of its divisors is an integer number (552000).

2^2204681 is an apocalyptic number.

It is an amenable number.

2204681 is a deficient number, since it is larger than the sum of its proper divisors (3319).

2204681 is an equidigital number, since it uses as much as digits as its factorization.

2204681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2204681 is about 1484.8168237193. The cubic root of 2204681 is about 130.1513228025.

The spelling of 2204681 in words is "two million, two hundred four thousand, six hundred eighty-one".