8221698 has 24 divisors (see below), whose sum is σ = 18060588. Its totient is φ = 2702592.

The previous prime is 8221669. The next prime is 8221721. The reversal of 8221698 is 8961228.

It can be written as a sum of positive squares in 2 ways, for example, as 7112889 + 1108809 = 2667^2 + 1053^2 .

It is a Curzon number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 1815 + ... + 4442.

Almost surely, 2^8221698 is an apocalyptic number.

8221698 is an abundant number, since it is smaller than the sum of its proper divisors (9838890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8221698 is a wasteful number, since it uses less digits than its factorization.

8221698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6338 (or 6335 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 8221698 is about 2867.3503448306. The cubic root of 8221698 is about 201.8306753450.

The spelling of 8221698 in words is "eight million, two hundred twenty-one thousand, six hundred ninety-eight".