13698917 has 4 divisors (see below), whose sum is σ = 14069196. Its totient is φ = 13328640.

The previous prime is 13698907. The next prime is 13698929. The reversal of 13698917 is 71989631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71989631 = 7 ⋅10284233.

It can be written as a sum of positive squares in 2 ways, for example, as 5410276 + 8288641 = 2326^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 13698917 - 2¹⁶ = 13633381 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 (13698907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185084 + ... + 185157.

It is an arithmetic number, because the mean of its divisors is an integer number (3517299).

Almost surely, 2^13698917 is an apocalyptic number.

It is an amenable number.

13698917 is a deficient number, since it is larger than the sum of its proper divisors (370279).

13698917 is an equidigital number, since it uses as much as digits as its factorization.

13698917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370278.

The product of its digits is 81648, while the sum is 44.

The square root of 13698917 is about 3701.2048038443. The cubic root of 13698917 is about 239.2739457832.

The spelling of 13698917 in words is "thirteen million, six hundred ninety-eight thousand, nine hundred seventeen".