20683763 has 2 divisors, whose sum is σ = 20683764. Its totient is φ = 20683762.

The previous prime is 20683717. The next prime is 20683769. The reversal of 20683763 is 36738602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20683763 - 2²⁴ = 3906547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20683769) 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, 10341881 + 10341882.

It is an arithmetic number, because the mean of its divisors is an integer number (10341882).

Almost surely, 2^20683763 is an apocalyptic number.

20683763 is a deficient number, since it is larger than the sum of its proper divisors (1).

20683763 is an equidigital number, since it uses as much as digits as its factorization.

20683763 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 20683763 is about 4547.9405229180. The cubic root of 20683763 is about 274.5005280884.

The spelling of 20683763 in words is "twenty million, six hundred eighty-three thousand, seven hundred sixty-three".