875681 has 2 divisors, whose sum is σ = 875682. Its totient is φ = 875680.

The previous prime is 875663. The next prime is 875683. The reversal of 875681 is 186578.

It is a happy number.

875681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625681 + 250000 = 791^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 875681 - 2⁶ = 875617 is a prime.

It is a super-2 number, since 2×875681² = 1533634427522, which contains 22 as substring.

Together with 875683, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 875681.

It is not a weakly prime, because it can be changed into another prime (875683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437840 + 437841.

It is an arithmetic number, because the mean of its divisors is an integer number (437841).

2⁸⁷⁵⁶⁸¹ is an apocalyptic number.

It is an amenable number.

875681 is a deficient number, since it is larger than the sum of its proper divisors (1).

875681 is an equidigital number, since it uses as much as digits as its factorization.

875681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 875681 is about 935.7782857066. The cubic root of 875681 is about 95.6713661543.

The spelling of 875681 in words is "eight hundred seventy-five thousand, six hundred eighty-one".