695881 has 2 divisors, whose sum is σ = 695882. Its totient is φ = 695880.

The previous prime is 695879. The next prime is 695899. The reversal of 695881 is 188596.

695881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614656 + 81225 = 784^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 695881 - 2¹ = 695879 is a prime.

It is a super-2 number, since 2×695881² = 968500732322, which contains 22 as substring.

Together with 695879, it forms a pair of twin primes.

It is a Chen prime.

695881 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 695881.

It is not a weakly prime, because it can be changed into another prime (695801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347940 + 347941.

It is an arithmetic number, because the mean of its divisors is an integer number (347941).

2⁶⁹⁵⁸⁸¹ is an apocalyptic number.

It is an amenable number.

695881 is a deficient number, since it is larger than the sum of its proper divisors (1).

695881 is an equidigital number, since it uses as much as digits as its factorization.

695881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 695881 is about 834.1948213697. The cubic root of 695881 is about 88.6159014308.

The spelling of 695881 in words is "six hundred ninety-five thousand, eight hundred eighty-one".