8221897 has 8 divisors (see below), whose sum is σ = 8811936. Its totient is φ = 7643712.

The previous prime is 8221891. The next prime is 8221903. The reversal of 8221897 is 7981228.

8221897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8221891) and next prime (8221903).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8221891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503 + ... + 4324.

It is an arithmetic number, because the mean of its divisors is an integer number (1101492).

Almost surely, 2^8221897 is an apocalyptic number.

It is an amenable number.

8221897 is a deficient number, since it is larger than the sum of its proper divisors (590039).

8221897 is a wasteful number, since it uses less digits than its factorization.

8221897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5927.

The product of its digits is 16128, while the sum is 37.

The square root of 8221897 is about 2867.3850456470. The cubic root of 8221897 is about 201.8323037182.

The spelling of 8221897 in words is "eight million, two hundred twenty-one thousand, eight hundred ninety-seven".