11687863 has 8 divisors (see below), whose sum is σ = 12819456. Its totient is φ = 10567800.

The previous prime is 11687861. The next prime is 11687903. The reversal of 11687863 is 36878611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11687863 - 2¹ = 11687861 is a prime.

It is a super-2 number, since 2×11687863² = 273212283013538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11687861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681 + ... + 4882.

It is an arithmetic number, because the mean of its divisors is an integer number (1602432).

Almost surely, 2^11687863 is an apocalyptic number.

11687863 is a deficient number, since it is larger than the sum of its proper divisors (1131593).

11687863 is a wasteful number, since it uses less digits than its factorization.

11687863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5765.

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

The square root of 11687863 is about 3418.7516727601. The cubic root of 11687863 is about 226.9403415322.

The spelling of 11687863 in words is "eleven million, six hundred eighty-seven thousand, eight hundred sixty-three".