20760197 has 2 divisors, whose sum is σ = 20760198. Its totient is φ = 20760196.

The previous prime is 20760149. The next prime is 20760221. The reversal of 20760197 is 79106702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15124321 + 5635876 = 3889^2 + 2374^2 .

It is a cyclic number.

It is not a de Polignac number, because 20760197 - 2⁶ = 20760133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20760107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10380098 + 10380099.

It is an arithmetic number, because the mean of its divisors is an integer number (10380099).

Almost surely, 2^20760197 is an apocalyptic number.

It is an amenable number.

20760197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20760197 is an equidigital number, since it uses as much as digits as its factorization.

20760197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 20760197 is about 4556.3359182571. The cubic root of 20760197 is about 274.8382387513.

Adding to 20760197 its reverse (79106702), we get a palindrome (99866899).

The spelling of 20760197 in words is "twenty million, seven hundred sixty thousand, one hundred ninety-seven".