828665911 has 2 divisors, whose sum is σ = 828665912. Its totient is φ = 828665910.

The previous prime is 828665881. The next prime is 828665927. The reversal of 828665911 is 119566828.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 828665911 - 2¹³ = 828657719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828665011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414332955 + 414332956.

It is an arithmetic number, because the mean of its divisors is an integer number (414332956).

Almost surely, 2^828665911 is an apocalyptic number.

828665911 is a deficient number, since it is larger than the sum of its proper divisors (1).

828665911 is an equidigital number, since it uses as much as digits as its factorization.

828665911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 46.

The square root of 828665911 is about 28786.5578178427. The cubic root of 828665911 is about 939.2758535557.

The spelling of 828665911 in words is "eight hundred twenty-eight million, six hundred sixty-five thousand, nine hundred eleven".