11688855 has 16 divisors (see below), whose sum is σ = 19208544. Its totient is φ = 6065280.

The previous prime is 11688839. The next prime is 11688863. The reversal of 11688855 is 55888611.

It is a happy number.

It is not a de Polignac number, because 11688855 - 2⁴ = 11688839 is a prime.

It is a super-2 number, since 2×11688855² = 273258662422050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9976 + ... + 11085.

It is an arithmetic number, because the mean of its divisors is an integer number (1200534).

Almost surely, 2^11688855 is an apocalyptic number.

11688855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11688855 is a deficient number, since it is larger than the sum of its proper divisors (7519689).

11688855 is a wasteful number, since it uses less digits than its factorization.

11688855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21106.

The product of its digits is 76800, while the sum is 42.

The square root of 11688855 is about 3418.8967518777. The cubic root of 11688855 is about 226.9467618234.

The spelling of 11688855 in words is "eleven million, six hundred eighty-eight thousand, eight hundred fifty-five".