20960497 has 2 divisors, whose sum is σ = 20960498. Its totient is φ = 20960496.

The previous prime is 20960453. The next prime is 20960501. The reversal of 20960497 is 79406902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19280881 + 1679616 = 4391^2 + 1296^2 .

It is a cyclic number.

It is not a de Polignac number, because 20960497 - 2⁷ = 20960369 is a prime.

It is not a weakly prime, because it can be changed into another prime (20960437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10480248 + 10480249.

It is an arithmetic number, because the mean of its divisors is an integer number (10480249).

Almost surely, 2^20960497 is an apocalyptic number.

It is an amenable number.

20960497 is a deficient number, since it is larger than the sum of its proper divisors (1).

20960497 is an equidigital number, since it uses as much as digits as its factorization.

20960497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 20960497 is about 4578.2635354466. The cubic root of 20960497 is about 275.7193157480.

It can be divided in two parts, 209 and 60497, that added together give a palindrome (60706).

The spelling of 20960497 in words is "twenty million, nine hundred sixty thousand, four hundred ninety-seven".