216086413 has 2 divisors, whose sum is σ = 216086414. Its totient is φ = 216086412.

The previous prime is 216086363. The next prime is 216086417. The reversal of 216086413 is 314680612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200420649 + 15665764 = 14157^2 + 3958^2 .

It is a cyclic number.

It is not a de Polignac number, because 216086413 - 2⁹ = 216085901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216086417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108043206 + 108043207.

It is an arithmetic number, because the mean of its divisors is an integer number (108043207).

Almost surely, 2^216086413 is an apocalyptic number.

It is an amenable number.

216086413 is a deficient number, since it is larger than the sum of its proper divisors (1).

216086413 is an equidigital number, since it uses as much as digits as its factorization.

216086413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 216086413 is about 14699.8779926910. The cubic root of 216086413 is about 600.0800013695.

The spelling of 216086413 in words is "two hundred sixteen million, eighty-six thousand, four hundred thirteen".