13086261 has 6 divisors (see below), whose sum is σ = 18902390. Its totient is φ = 8724168.

The previous prime is 13086251. The next prime is 13086263. The reversal of 13086261 is 16268031.

13086261 is a `hidden beast` number, since 1 + 30 + 8 + 626 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 3538161 = 3090^2 + 1881^2 .

It is not a de Polignac number, because 13086261 - 2⁷ = 13086133 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 (13086263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 727006 + ... + 727023.

Almost surely, 2^13086261 is an apocalyptic number.

It is an amenable number.

13086261 is a deficient number, since it is larger than the sum of its proper divisors (5816129).

13086261 is a wasteful number, since it uses less digits than its factorization.

13086261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454035 (or 1454032 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 13086261 is about 3617.4937456753. The cubic root of 13086261 is about 235.6523957152.

It can be divided in two parts, 1308 and 6261, that added together give a square (7569 = 87²).

The spelling of 13086261 in words is "thirteen million, eighty-six thousand, two hundred sixty-one".