11689857 has 24 divisors (see below), whose sum is σ = 17409600. Its totient is φ = 7555680.

The previous prime is 11689849. The next prime is 11689859. The reversal of 11689857 is 75898611.

11689857 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11689857 - 2³ = 11689849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11689859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58644 + ... + 58842.

It is an arithmetic number, because the mean of its divisors is an integer number (725400).

Almost surely, 2^11689857 is an apocalyptic number.

It is an amenable number.

11689857 is a deficient number, since it is larger than the sum of its proper divisors (5719743).

11689857 is a wasteful number, since it uses less digits than its factorization.

11689857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 370 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 11689857 is about 3419.0432872369. The cubic root of 11689857 is about 226.9532464665.

It can be divided in two parts, 1168 and 9857, that added together give a square (11025 = 105²).

The spelling of 11689857 in words is "eleven million, six hundred eighty-nine thousand, eight hundred fifty-seven".