832768721 has 2 divisors, whose sum is σ = 832768722. Its totient is φ = 832768720.

The previous prime is 832768711. The next prime is 832768757. The reversal of 832768721 is 127867238.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 812877121 + 19891600 = 28511^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 832768721 - 2¹⁰ = 832767697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (832768711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416384360 + 416384361.

It is an arithmetic number, because the mean of its divisors is an integer number (416384361).

Almost surely, 2^832768721 is an apocalyptic number.

It is an amenable number.

832768721 is a deficient number, since it is larger than the sum of its proper divisors (1).

832768721 is an equidigital number, since it uses as much as digits as its factorization.

832768721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 832768721 is about 28857.7324299745. The cubic root of 832768721 is about 940.8234526453.

The spelling of 832768721 in words is "eight hundred thirty-two million, seven hundred sixty-eight thousand, seven hundred twenty-one".