8820297 has 12 divisors (see below), whose sum is σ = 13490100. Its totient is φ = 5534208.

The previous prime is 8820283. The next prime is 8820299. The reversal of 8820297 is 7920288.

It can be written as a sum of positive squares in 2 ways, for example, as 8173881 + 646416 = 2859^2 + 804^2 .

It is not a de Polignac number, because 8820297 - 2⁷ = 8820169 is a prime.

8820297 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8820299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28672 + ... + 28977.

It is an arithmetic number, because the mean of its divisors is an integer number (1124175).

Almost surely, 2^8820297 is an apocalyptic number.

It is an amenable number.

8820297 is a deficient number, since it is larger than the sum of its proper divisors (4669803).

8820297 is a wasteful number, since it uses less digits than its factorization.

8820297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57672 (or 57669 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8820297 is about 2969.8984831135. The cubic root of 8820297 is about 206.6146299210.

Subtracting from 8820297 its reverse (7920288), we obtain a palindrome (900009).

The spelling of 8820297 in words is "eight million, eight hundred twenty thousand, two hundred ninety-seven".