13688498 has 4 divisors (see below), whose sum is σ = 20532750. Its totient is φ = 6844248.

The previous prime is 13688471. The next prime is 13688501. The reversal of 13688498 is 89488631.

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

It can be written as a sum of positive squares in only one way, i.e., 8567329 + 5121169 = 2927^2 + 2263^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3422123 + ... + 3422126.

Almost surely, 2^13688498 is an apocalyptic number.

13688498 is a deficient number, since it is larger than the sum of its proper divisors (6844252).

13688498 is an equidigital number, since it uses as much as digits as its factorization.

13688498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844251.

The product of its digits is 331776, while the sum is 47.

The square root of 13688498 is about 3699.7970214594. The cubic root of 13688498 is about 239.2132687837.

The spelling of 13688498 in words is "thirteen million, six hundred eighty-eight thousand, four hundred ninety-eight".