20934653 has 2 divisors, whose sum is σ = 20934654. Its totient is φ = 20934652.

The previous prime is 20934611. The next prime is 20934659. The reversal of 20934653 is 35643902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19035769 + 1898884 = 4363^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 20934653 - 2¹⁰ = 20933629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20934659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10467326 + 10467327.

It is an arithmetic number, because the mean of its divisors is an integer number (10467327).

Almost surely, 2^20934653 is an apocalyptic number.

It is an amenable number.

20934653 is a deficient number, since it is larger than the sum of its proper divisors (1).

20934653 is an equidigital number, since it uses as much as digits as its factorization.

20934653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 20934653 is about 4575.4401974018. The cubic root of 20934653 is about 275.6059497874.

The spelling of 20934653 in words is "twenty million, nine hundred thirty-four thousand, six hundred fifty-three".