10871681 has 2 divisors, whose sum is σ = 10871682. Its totient is φ = 10871680.

The previous prime is 10871677. The next prime is 10871689. The reversal of 10871681 is 18617801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10784656 + 87025 = 3284^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 10871681 - 2² = 10871677 is a prime.

It is a super-2 number, since 2×10871681² = 236386895531522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10871689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5435840 + 5435841.

It is an arithmetic number, because the mean of its divisors is an integer number (5435841).

Almost surely, 2^10871681 is an apocalyptic number.

It is an amenable number.

10871681 is a deficient number, since it is larger than the sum of its proper divisors (1).

10871681 is an equidigital number, since it uses as much as digits as its factorization.

10871681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 10871681 is about 3297.2232256855. The cubic root of 10871681 is about 221.5298398687.

The spelling of 10871681 in words is "ten million, eight hundred seventy-one thousand, six hundred eighty-one".