2116636 has 18 divisors (see below), whose sum is σ = 3936968. Its totient is φ = 995520.

The previous prime is 2116633. The next prime is 2116651. The reversal of 2116636 is 6366112.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2116636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 241 + ... + 2071.

2^2116636 is an apocalyptic number.

It is an amenable number.

2116636 is a deficient number, since it is larger than the sum of its proper divisors (1820332).

2116636 is a wasteful number, since it uses less digits than its factorization.

2116636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869 (or 1850 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 2116636 is about 1454.8663168828. The cubic root of 2116636 is about 128.3951816724.

The spelling of 2116636 in words is "two million, one hundred sixteen thousand, six hundred thirty-six".