995638 has 24 divisors (see below), whose sum is σ = 1810512. Its totient is φ = 402192.

The previous prime is 995623. The next prime is 995641. The reversal of 995638 is 836599.

It is a self number, because there is not a number n which added to its sum of digits gives 995638.

It is a congruent number.

It is an unprimeable number.

995638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4956 + ... + 5152.

It is an arithmetic number, because the mean of its divisors is an integer number (75438).

2⁹⁹⁵⁶³⁸ is an apocalyptic number.

995638 is a deficient number, since it is larger than the sum of its proper divisors (814874).

995638 is a wasteful number, since it uses less digits than its factorization.

995638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 225 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 995638 is about 997.8166164181. The cubic root of 995638 is about 99.8543880746.

The spelling of 995638 in words is "nine hundred ninety-five thousand, six hundred thirty-eight".