995881 has 2 divisors, whose sum is σ = 995882. Its totient is φ = 995880.

The previous prime is 995833. The next prime is 995887. The reversal of 995881 is 188599.

995881 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., 518400 + 477481 = 720^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 995881 - 2⁹ = 995369 is a prime.

It is a super-2 number, since 2×995881² = 1983557932322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (995887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497940 + 497941.

It is an arithmetic number, because the mean of its divisors is an integer number (497941).

2⁹⁹⁵⁸⁸¹ is an apocalyptic number.

It is an amenable number.

995881 is a deficient number, since it is larger than the sum of its proper divisors (1).

995881 is an equidigital number, since it uses as much as digits as its factorization.

995881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 40.

The square root of 995881 is about 997.9383748509. The cubic root of 995881 is about 99.8625110545.

The spelling of 995881 in words is "nine hundred ninety-five thousand, eight hundred eighty-one".