832721 has 2 divisors, whose sum is σ = 832722. Its totient is φ = 832720.

The previous prime is 832717. The next prime is 832729. The reversal of 832721 is 127238.

832721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 640000 + 192721 = 800^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 832721 - 2² = 832717 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 8⁴ + 3⁶ + 7⁷ + 2⁸ + 2¹² + 1 .

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 832721.

It is not a weakly prime, because it can be changed into another prime (832729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 416360 + 416361.

It is an arithmetic number, because the mean of its divisors is an integer number (416361).

2⁸³²⁷²¹ is an apocalyptic number.

It is an amenable number.

832721 is a deficient number, since it is larger than the sum of its proper divisors (1).

832721 is an equidigital number, since it uses as much as digits as its factorization.

832721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 23.

The square root of 832721 is about 912.5354787623. The cubic root of 832721 is about 94.0805481312.

Adding to 832721 its reverse (127238), we get a palindrome (959959).

The spelling of 832721 in words is "eight hundred thirty-two thousand, seven hundred twenty-one".