20202697 has 2 divisors, whose sum is σ = 20202698. Its totient is φ = 20202696.

The previous prime is 20202683. The next prime is 20202751. The reversal of 20202697 is 79620202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13957696 + 6245001 = 3736^2 + 2499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20202697 is a prime.

It is not a weakly prime, because it can be changed into another prime (20202667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101348 + 10101349.

It is an arithmetic number, because the mean of its divisors is an integer number (10101349).

Almost surely, 2^20202697 is an apocalyptic number.

It is an amenable number.

20202697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202697 is an equidigital number, since it uses as much as digits as its factorization.

20202697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20202697 is about 4494.7410381467. The cubic root of 20202697 is about 272.3556882545.

Adding to 20202697 its reverse (79620202), we get a palindrome (99822899).

The spelling of 20202697 in words is "twenty million, two hundred two thousand, six hundred ninety-seven".