13720307 has 2 divisors, whose sum is σ = 13720308. Its totient is φ = 13720306.

The previous prime is 13720283. The next prime is 13720319. The reversal of 13720307 is 70302731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13720307 - 2¹⁰ = 13719283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13750307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6860153 + 6860154.

It is an arithmetic number, because the mean of its divisors is an integer number (6860154).

Almost surely, 2^13720307 is an apocalyptic number.

13720307 is a deficient number, since it is larger than the sum of its proper divisors (1).

13720307 is an equidigital number, since it uses as much as digits as its factorization.

13720307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 13720307 is about 3704.0932763633. The cubic root of 13720307 is about 239.3984181085.

The spelling of 13720307 in words is "thirteen million, seven hundred twenty thousand, three hundred seven".