20698063 has 2 divisors, whose sum is σ = 20698064. Its totient is φ = 20698062.

The previous prime is 20698043. The next prime is 20698081. The reversal of 20698063 is 36089602.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20698063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20698003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10349031 + 10349032.

It is an arithmetic number, because the mean of its divisors is an integer number (10349032).

Almost surely, 2^20698063 is an apocalyptic number.

20698063 is a deficient number, since it is larger than the sum of its proper divisors (1).

20698063 is an equidigital number, since it uses as much as digits as its factorization.

20698063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 20698063 is about 4549.5123914547. The cubic root of 20698063 is about 274.5637734028.

The spelling of 20698063 in words is "twenty million, six hundred ninety-eight thousand, sixty-three".