13775687 has 8 divisors (see below), whose sum is σ = 14382720. Its totient is φ = 13178880.

The previous prime is 13775681. The next prime is 13775701. The reversal of 13775687 is 78657731.

13775687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13775687 - 2⁶ = 13775623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13775681) 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, 263 + ... + 5255.

It is an arithmetic number, because the mean of its divisors is an integer number (1797840).

Almost surely, 2^13775687 is an apocalyptic number.

13775687 is a deficient number, since it is larger than the sum of its proper divisors (607033).

13775687 is an equidigital number, since it uses as much as digits as its factorization.

13775687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113.

The product of its digits is 246960, while the sum is 44.

The square root of 13775687 is about 3711.5612617873. The cubic root of 13775687 is about 239.7200845371.

It can be divided in two parts, 13775 and 687, that multiplied together give a triangular number (9463425 = T₄₃₅₀).

The spelling of 13775687 in words is "thirteen million, seven hundred seventy-five thousand, six hundred eighty-seven".