20765333 has 2 divisors, whose sum is σ = 20765334. Its totient is φ = 20765332.

The previous prime is 20765321. The next prime is 20765341. The reversal of 20765333 is 33356702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15038884 + 5726449 = 3878^2 + 2393^2 .

It is a cyclic number.

It is not a de Polignac number, because 20765333 - 2⁸ = 20765077 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20765296 and 20765305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20767333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10382666 + 10382667.

It is an arithmetic number, because the mean of its divisors is an integer number (10382667).

Almost surely, 2^20765333 is an apocalyptic number.

It is an amenable number.

20765333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20765333 is an equidigital number, since it uses as much as digits as its factorization.

20765333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 29.

The square root of 20765333 is about 4556.8994941736. The cubic root of 20765333 is about 274.8609015550.

The spelling of 20765333 in words is "twenty million, seven hundred sixty-five thousand, three hundred thirty-three".