20286653 has 2 divisors, whose sum is σ = 20286654. Its totient is φ = 20286652.

The previous prime is 20286613. The next prime is 20286671. The reversal of 20286653 is 35668202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18207289 + 2079364 = 4267^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 20286653 - 2¹⁸ = 20024509 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 (20286613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10143326 + 10143327.

It is an arithmetic number, because the mean of its divisors is an integer number (10143327).

Almost surely, 2^20286653 is an apocalyptic number.

It is an amenable number.

20286653 is a deficient number, since it is larger than the sum of its proper divisors (1).

20286653 is an equidigital number, since it uses as much as digits as its factorization.

20286653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 20286653 is about 4504.0707143650. The cubic root of 20286653 is about 272.7324414610.

The spelling of 20286653 in words is "twenty million, two hundred eighty-six thousand, six hundred fifty-three".