83623321 has 2 divisors, whose sum is σ = 83623322. Its totient is φ = 83623320.

The previous prime is 83623307. The next prime is 83623343. The reversal of 83623321 is 12332638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81649296 + 1974025 = 9036^2 + 1405^2 .

It is a cyclic number.

It is not a de Polignac number, because 83623321 - 2¹¹ = 83621273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83623321.

It is not a weakly prime, because it can be changed into another prime (83627321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41811660 + 41811661.

It is an arithmetic number, because the mean of its divisors is an integer number (41811661).

Almost surely, 2^83623321 is an apocalyptic number.

It is an amenable number.

83623321 is a deficient number, since it is larger than the sum of its proper divisors (1).

83623321 is an equidigital number, since it uses as much as digits as its factorization.

83623321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 28.

The square root of 83623321 is about 9144.5787765211. The cubic root of 83623321 is about 437.2963009280.

Adding to 83623321 its reverse (12332638), we get a palindrome (95955959).

The spelling of 83623321 in words is "eighty-three million, six hundred twenty-three thousand, three hundred twenty-one".