13680479 has 2 divisors, whose sum is σ = 13680480. Its totient is φ = 13680478.

The previous prime is 13680439. The next prime is 13680539. The reversal of 13680479 is 97408631.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13680479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13680439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6840239 + 6840240.

It is an arithmetic number, because the mean of its divisors is an integer number (6840240).

Almost surely, 2^13680479 is an apocalyptic number.

13680479 is a deficient number, since it is larger than the sum of its proper divisors (1).

13680479 is an equidigital number, since it uses as much as digits as its factorization.

13680479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 13680479 is about 3698.7131545985. The cubic root of 13680479 is about 239.1665476628.

The spelling of 13680479 in words is "thirteen million, six hundred eighty thousand, four hundred seventy-nine".