13687461 has 48 divisors (see below), whose sum is σ = 22364160. Its totient is φ = 8339760.

The previous prime is 13687439. The next prime is 13687463. The reversal of 13687461 is 16478631.

13687461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13687461 - 2¹³ = 13679269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13687463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 173220 + ... + 173298.

It is an arithmetic number, because the mean of its divisors is an integer number (465920).

Almost surely, 2^13687461 is an apocalyptic number.

It is an amenable number.

13687461 is a deficient number, since it is larger than the sum of its proper divisors (8676699).

13687461 is an equidigital number, since it uses as much as digits as its factorization.

13687461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 136 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 13687461 is about 3699.6568759819. The cubic root of 13687461 is about 239.2072279353.

The spelling of 13687461 in words is "thirteen million, six hundred eighty-seven thousand, four hundred sixty-one".