13691041 has 12 divisors (see below), whose sum is σ = 17152212. Its totient is φ = 10831968.

The previous prime is 13691033. The next prime is 13691107. The reversal of 13691041 is 14019631.

It can be written as a sum of positive squares in 2 ways, for example, as 1587600 + 12103441 = 1260^2 + 3479^2 .

It is not a de Polignac number, because 13691041 - 2³ = 13691033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13690997 and 13691015.

It is not an unprimeable number, because it can be changed into a prime (13691441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10110 + ... + 11383.

It is an arithmetic number, because the mean of its divisors is an integer number (1429351).

Almost surely, 2^13691041 is an apocalyptic number.

It is an amenable number.

13691041 is a deficient number, since it is larger than the sum of its proper divisors (3461171).

13691041 is a wasteful number, since it uses less digits than its factorization.

13691041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21520 (or 21513 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 13691041 is about 3700.1406730015. The cubic root of 13691041 is about 239.2280812604.

The spelling of 13691041 in words is "thirteen million, six hundred ninety-one thousand, forty-one".