13679647 has 4 divisors (see below), whose sum is σ = 13750720. Its totient is φ = 13608576.

The previous prime is 13679623. The next prime is 13679669. The reversal of 13679647 is 74697631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74697631 = 31 ⋅2409601.

It is a cyclic number.

It is not a de Polignac number, because 13679647 - 2¹⁵ = 13646879 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 (13679047) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 35247 + ... + 35632.

It is an arithmetic number, because the mean of its divisors is an integer number (3437680).

Almost surely, 2^13679647 is an apocalyptic number.

13679647 is a deficient number, since it is larger than the sum of its proper divisors (71073).

13679647 is an equidigital number, since it uses as much as digits as its factorization.

13679647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71072.

The product of its digits is 190512, while the sum is 43.

The square root of 13679647 is about 3698.6006813388. The cubic root of 13679647 is about 239.1616991337.

The spelling of 13679647 in words is "thirteen million, six hundred seventy-nine thousand, six hundred forty-seven".