216641713 has 2 divisors, whose sum is σ = 216641714. Its totient is φ = 216641712.

The previous prime is 216641707. The next prime is 216641717. The reversal of 216641713 is 317146612.

216641713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179881744 + 36759969 = 13412^2 + 6063^2 .

It is a cyclic number.

It is not a de Polignac number, because 216641713 - 2¹⁷ = 216510641 is a prime.

It is not a weakly prime, because it can be changed into another prime (216641717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108320856 + 108320857.

It is an arithmetic number, because the mean of its divisors is an integer number (108320857).

Almost surely, 2^216641713 is an apocalyptic number.

It is an amenable number.

216641713 is a deficient number, since it is larger than the sum of its proper divisors (1).

216641713 is an equidigital number, since it uses as much as digits as its factorization.

216641713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 216641713 is about 14718.7537855621. The cubic root of 216641713 is about 600.5935912591.

The spelling of 216641713 in words is "two hundred sixteen million, six hundred forty-one thousand, seven hundred thirteen".