13709679 has 16 divisors (see below), whose sum is σ = 19160064. Its totient is φ = 8703200.

The previous prime is 13709651. The next prime is 13709681. The reversal of 13709679 is 97690731.

It is not a de Polignac number, because 13709679 - 2⁷ = 13709551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13709679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13709629) 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 15 ways as a sum of consecutive naturals, for example, 29509 + ... + 29969.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^13709679 is an apocalyptic number.

13709679 is a deficient number, since it is larger than the sum of its proper divisors (5450385).

13709679 is a wasteful number, since it uses less digits than its factorization.

13709679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 13709679 is about 3702.6583693341. The cubic root of 13709679 is about 239.3365880141.

The spelling of 13709679 in words is "thirteen million, seven hundred nine thousand, six hundred seventy-nine".