995681 has 4 divisors (see below), whose sum is σ = 1001364. Its totient is φ = 990000.

The previous prime is 995677. The next prime is 995699. The reversal of 995681 is 186599.

995681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 483025 + 512656 = 695^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 995681 - 2² = 995677 is a prime.

It is a super-2 number, since 2×995681² = 1982761307522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (995611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2570 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (250341).

2⁹⁹⁵⁶⁸¹ is an apocalyptic number.

It is an amenable number.

995681 is a deficient number, since it is larger than the sum of its proper divisors (5683).

995681 is a wasteful number, since it uses less digits than its factorization.

995681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682.

The product of its digits is 19440, while the sum is 38.

The square root of 995681 is about 997.8381632309. The cubic root of 995681 is about 99.8558255706.

The spelling of 995681 in words is "nine hundred ninety-five thousand, six hundred eighty-one".