2271689 has 16 divisors (see below), whose sum is σ = 2736000. Its totient is φ = 1883952.

The previous prime is 2271683. The next prime is 2271721. The reversal of 2271689 is 9861722.

It is a happy number.

It is not a de Polignac number, because 2271689 - 2⁴ = 2271673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2271683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12602 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (171000).

2^2271689 is an apocalyptic number.

It is an amenable number.

2271689 is a deficient number, since it is larger than the sum of its proper divisors (464311).

2271689 is an equidigital number, since it uses as much as digits as its factorization.

2271689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 223 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 2271689 is about 1507.2123274443. The cubic root of 2271689 is about 131.4567703805.

The spelling of 2271689 in words is "two million, two hundred seventy-one thousand, six hundred eighty-nine".