216207679 has 2 divisors, whose sum is σ = 216207680. Its totient is φ = 216207678.

The previous prime is 216207599. The next prime is 216207701. The reversal of 216207679 is 976702612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216207679 - 2¹¹ = 216205631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216207179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108103839 + 108103840.

It is an arithmetic number, because the mean of its divisors is an integer number (108103840).

Almost surely, 2^216207679 is an apocalyptic number.

216207679 is a deficient number, since it is larger than the sum of its proper divisors (1).

216207679 is an equidigital number, since it uses as much as digits as its factorization.

216207679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 216207679 is about 14704.0021422741. The cubic root of 216207679 is about 600.1922337741.

The spelling of 216207679 in words is "two hundred sixteen million, two hundred seven thousand, six hundred seventy-nine".