20763983 has 2 divisors, whose sum is σ = 20763984. Its totient is φ = 20763982.

The previous prime is 20763937. The next prime is 20763991. The reversal of 20763983 is 38936702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20763983 - 2⁸ = 20763727 is a prime.

It is a super-2 number, since 2×20763983² = 862285980048578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20763923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381991 + 10381992.

It is an arithmetic number, because the mean of its divisors is an integer number (10381992).

Almost surely, 2^20763983 is an apocalyptic number.

20763983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20763983 is an equidigital number, since it uses as much as digits as its factorization.

20763983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 20763983 is about 4556.7513647334. The cubic root of 20763983 is about 274.8549449885.

The spelling of 20763983 in words is "twenty million, seven hundred sixty-three thousand, nine hundred eighty-three".