216676633 has 2 divisors, whose sum is σ = 216676634. Its totient is φ = 216676632.

The previous prime is 216676619. The next prime is 216676637. The reversal of 216676633 is 336676612.

216676633 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., 150872089 + 65804544 = 12283^2 + 8112^2 .

It is a cyclic number.

It is not a de Polignac number, because 216676633 - 2⁵ = 216676601 is a prime.

It is not a weakly prime, because it can be changed into another prime (216676637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108338316 + 108338317.

It is an arithmetic number, because the mean of its divisors is an integer number (108338317).

Almost surely, 2^216676633 is an apocalyptic number.

It is an amenable number.

216676633 is a deficient number, since it is larger than the sum of its proper divisors (1).

216676633 is an equidigital number, since it uses as much as digits as its factorization.

216676633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 40.

The square root of 216676633 is about 14719.9399794972. The cubic root of 216676633 is about 600.6258589776.

The spelling of 216676633 in words is "two hundred sixteen million, six hundred seventy-six thousand, six hundred thirty-three".