20865083 has 2 divisors, whose sum is σ = 20865084. Its totient is φ = 20865082.

The previous prime is 20865067. The next prime is 20865109. The reversal of 20865083 is 38056802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20865083 - 2⁴ = 20865067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20865283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10432541 + 10432542.

It is an arithmetic number, because the mean of its divisors is an integer number (10432542).

Almost surely, 2^20865083 is an apocalyptic number.

20865083 is a deficient number, since it is larger than the sum of its proper divisors (1).

20865083 is an equidigital number, since it uses as much as digits as its factorization.

20865083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20865083 is about 4567.8313235057. The cubic root of 20865083 is about 275.3003132464.

The spelling of 20865083 in words is "twenty million, eight hundred sixty-five thousand, eighty-three".