20960197 has 2 divisors, whose sum is σ = 20960198. Its totient is φ = 20960196.

The previous prime is 20960189. The next prime is 20960263. The reversal of 20960197 is 79106902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17859076 + 3101121 = 4226^2 + 1761^2 .

It is a cyclic number.

It is not a de Polignac number, because 20960197 - 2³ = 20960189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20960117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10480098 + 10480099.

It is an arithmetic number, because the mean of its divisors is an integer number (10480099).

Almost surely, 2^20960197 is an apocalyptic number.

It is an amenable number.

20960197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20960197 is an equidigital number, since it uses as much as digits as its factorization.

20960197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 20960197 is about 4578.2307718157. The cubic root of 20960197 is about 275.7180003181.

It can be divided in two parts, 209 and 60197, that added together give a palindrome (60406).

The spelling of 20960197 in words is "twenty million, nine hundred sixty thousand, one hundred ninety-seven".