995663 has 2 divisors, whose sum is σ = 995664.
Its totient is φ = 995662.
The previous prime is 995651. The next prime is 995669. The reversal of 995663 is 366599.
It is a strong prime.
It is an emirp because it is prime and its reverse (366599) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 995663 - 212 = 991567 is a prime.
It is an Ulam number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 995663.
It is not a weakly prime, because it can be changed into another prime (995669) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497831 + 497832.
It is an arithmetic number, because the mean of its divisors is an integer number (497832).
2995663 is an apocalyptic number.
995663 is a deficient number, since it is larger than the sum of its proper divisors (1).
995663 is an equidigital number, since it uses as much as digits as its factorization.
995663 is an evil number, because the sum of its binary digits is even.
The product of its digits is 43740, while the sum is 38.
The square root of 995663 is about 997.8291436914.
The cubic root of 995663 is about 99.8552238331.
The spelling of 995663 in words is "nine hundred ninety-five thousand, six hundred sixty-three".