1995633 has 6 divisors (see below), whose sum is σ = 2882594. Its totient is φ = 1330416.

The previous prime is 1995629. The next prime is 1995649. The reversal of 1995633 is 3365991.

1995633 is a `hidden beast` number, since 1 + 99 + 563 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1912689 + 82944 = 1383^2 + 288^2 .

It is not a de Polignac number, because 1995633 - 2² = 1995629 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1995683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110860 + ... + 110877.

2^1995633 is an apocalyptic number.

It is an amenable number.

1995633 is a deficient number, since it is larger than the sum of its proper divisors (886961).

1995633 is a wasteful number, since it uses less digits than its factorization.

1995633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221743 (or 221740 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 1995633 is about 1412.6687509816. The cubic root of 1995633 is about 125.9003369114.

It can be divided in two parts, 1995 and 633, that added together give a triangular number (2628 = T₇₂).

The spelling of 1995633 in words is "one million, nine hundred ninety-five thousand, six hundred thirty-three".