8220497 has 2 divisors, whose sum is σ = 8220498. Its totient is φ = 8220496.

The previous prime is 8220493. The next prime is 8220517. The reversal of 8220497 is 7940228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5958481 + 2262016 = 2441^2 + 1504^2 .

It is a cyclic number.

It is not a de Polignac number, because 8220497 - 2² = 8220493 is a prime.

It is not a weakly prime, because it can be changed into another prime (8220493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110248 + 4110249.

It is an arithmetic number, because the mean of its divisors is an integer number (4110249).

Almost surely, 2^8220497 is an apocalyptic number.

It is an amenable number.

8220497 is a deficient number, since it is larger than the sum of its proper divisors (1).

8220497 is an equidigital number, since it uses as much as digits as its factorization.

8220497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 8220497 is about 2867.1409103844. The cubic root of 8220497 is about 201.8208472679.

The spelling of 8220497 in words is "eight million, two hundred twenty thousand, four hundred ninety-seven".