20862097 has 2 divisors, whose sum is σ = 20862098. Its totient is φ = 20862096.

The previous prime is 20862089. The next prime is 20862113. The reversal of 20862097 is 79026802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 576081 = 4504^2 + 759^2 .

It is a cyclic number.

It is not a de Polignac number, because 20862097 - 2³ = 20862089 is a prime.

It is not a weakly prime, because it can be changed into another prime (20862007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10431048 + 10431049.

It is an arithmetic number, because the mean of its divisors is an integer number (10431049).

Almost surely, 2^20862097 is an apocalyptic number.

It is an amenable number.

20862097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20862097 is an equidigital number, since it uses as much as digits as its factorization.

20862097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20862097 is about 4567.5044608626. The cubic root of 20862097 is about 275.2871798862.

Adding to 20862097 its reverse (79026802), we get a palindrome (99888899).

The spelling of 20862097 in words is "twenty million, eight hundred sixty-two thousand, ninety-seven".