11868637 has 4 divisors (see below), whose sum is σ = 12947616. Its totient is φ = 10789660.

The previous prime is 11868613. The next prime is 11868641. The reversal of 11868637 is 73686811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11868637 - 2⁷ = 11868509 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 11868637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11868607) 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, 539473 + ... + 539494.

It is an arithmetic number, because the mean of its divisors is an integer number (3236904).

Almost surely, 2^11868637 is an apocalyptic number.

It is an amenable number.

11868637 is a deficient number, since it is larger than the sum of its proper divisors (1078979).

11868637 is a wasteful number, since it uses less digits than its factorization.

11868637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078978.

The product of its digits is 48384, while the sum is 40.

The square root of 11868637 is about 3445.0888232381. The cubic root of 11868637 is about 228.1043753669.

The spelling of 11868637 in words is "eleven million, eight hundred sixty-eight thousand, six hundred thirty-seven".