13680907 has 2 divisors, whose sum is σ = 13680908. Its totient is φ = 13680906.

The previous prime is 13680899. The next prime is 13680911. The reversal of 13680907 is 70908631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13680907 - 2³ = 13680899 is a prime.

It is not a weakly prime, because it can be changed into another prime (13680707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6840453 + 6840454.

It is an arithmetic number, because the mean of its divisors is an integer number (6840454).

Almost surely, 2^13680907 is an apocalyptic number.

13680907 is a deficient number, since it is larger than the sum of its proper divisors (1).

13680907 is an equidigital number, since it uses as much as digits as its factorization.

13680907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 13680907 is about 3698.7710121066. The cubic root of 13680907 is about 239.1690417815.

The spelling of 13680907 in words is "thirteen million, six hundred eighty thousand, nine hundred seven".