13265887 has 4 divisors (see below), whose sum is σ = 13574440. Its totient is φ = 12957336.

The previous prime is 13265851. The next prime is 13265893. The reversal of 13265887 is 78856231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78856231 = 167 ⋅472193.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13265887 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 (13265827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154212 + ... + 154297.

It is an arithmetic number, because the mean of its divisors is an integer number (3393610).

Almost surely, 2^13265887 is an apocalyptic number.

13265887 is a deficient number, since it is larger than the sum of its proper divisors (308553).

13265887 is an equidigital number, since it uses as much as digits as its factorization.

13265887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308552.

The product of its digits is 80640, while the sum is 40.

The square root of 13265887 is about 3642.2365381727. The cubic root of 13265887 is about 236.7257118652.

The spelling of 13265887 in words is "thirteen million, two hundred sixty-five thousand, eight hundred eighty-seven".