13698688 has 16 divisors (see below), whose sum is σ = 27290610. Its totient is φ = 6849280.

The previous prime is 13698673. The next prime is 13698689. The reversal of 13698688 is 88689631.

It can be written as a sum of positive squares in only one way, i.e., 13601344 + 97344 = 3688^2 + 312^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (13698689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53383 + ... + 53638.

Almost surely, 2^13698688 is an apocalyptic number.

It is an amenable number.

13698688 is a deficient number, since it is larger than the sum of its proper divisors (13591922).

13698688 is an equidigital number, since it uses as much as digits as its factorization.

13698688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107035 (or 107023 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 13698688 is about 3701.1738678425. The cubic root of 13698688 is about 239.2726124895.

The spelling of 13698688 in words is "thirteen million, six hundred ninety-eight thousand, six hundred eighty-eight".