13691455 has 4 divisors (see below), whose sum is σ = 16429752. Its totient is φ = 10953160.

The previous prime is 13691449. The next prime is 13691467. The reversal of 13691455 is 55419631.

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

It is not a de Polignac number, because 13691455 - 2⁵ = 13691423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13691455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369141 + ... + 1369150.

It is an arithmetic number, because the mean of its divisors is an integer number (4107438).

Almost surely, 2^13691455 is an apocalyptic number.

13691455 is a deficient number, since it is larger than the sum of its proper divisors (2738297).

13691455 is an equidigital number, since it uses as much as digits as its factorization.

13691455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738296.

The product of its digits is 16200, while the sum is 34.

The square root of 13691455 is about 3700.1966163976. The cubic root of 13691455 is about 239.2304925557.

The spelling of 13691455 in words is "thirteen million, six hundred ninety-one thousand, four hundred fifty-five".