2271869 has 2 divisors, whose sum is σ = 2271870. Its totient is φ = 2271868.

The previous prime is 2271859. The next prime is 2271877. The reversal of 2271869 is 9681722.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1923769 + 348100 = 1387^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 2271869 - 2⁸ = 2271613 is a prime.

It is a super-2 number, since 2×2271869² = 10322777506322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2271859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1135934 + 1135935.

It is an arithmetic number, because the mean of its divisors is an integer number (1135935).

2^2271869 is an apocalyptic number.

It is an amenable number.

2271869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2271869 is an equidigital number, since it uses as much as digits as its factorization.

2271869 is an evil number, because the sum of its binary digits is even.

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

The square root of 2271869 is about 1507.2720391489. The cubic root of 2271869 is about 131.4602423338.

The spelling of 2271869 in words is "two million, two hundred seventy-one thousand, eight hundred sixty-nine".