8598221 has 2 divisors, whose sum is σ = 8598222. Its totient is φ = 8598220.

The previous prime is 8598197. The next prime is 8598307. The reversal of 8598221 is 1228958.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6180196 + 2418025 = 2486^2 + 1555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8598221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8595221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4299110 + 4299111.

It is an arithmetic number, because the mean of its divisors is an integer number (4299111).

Almost surely, 2^8598221 is an apocalyptic number.

It is an amenable number.

8598221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8598221 is an equidigital number, since it uses as much as digits as its factorization.

8598221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 35.

The square root of 8598221 is about 2932.2723270529. The cubic root of 8598221 is about 204.8658332896.

The spelling of 8598221 in words is "eight million, five hundred ninety-eight thousand, two hundred twenty-one".