13755986 has 4 divisors (see below), whose sum is σ = 20633982. Its totient is φ = 6877992.

The previous prime is 13755983. The next prime is 13755997. The reversal of 13755986 is 68955731.

13755986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 323761 = 3665^2 + 569^2 .

It is not an unprimeable number, because it can be changed into a prime (13755983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3438995 + ... + 3438998.

Almost surely, 2^13755986 is an apocalyptic number.

13755986 is a deficient number, since it is larger than the sum of its proper divisors (6877996).

13755986 is an equidigital number, since it uses as much as digits as its factorization.

13755986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877995.

The product of its digits is 226800, while the sum is 44.

The square root of 13755986 is about 3708.9063077948. The cubic root of 13755986 is about 239.6057531903.

It can be divided in two parts, 13755 and 986, that added together give a palindrome (14741).

The spelling of 13755986 in words is "thirteen million, seven hundred fifty-five thousand, nine hundred eighty-six".