20775883 has 2 divisors, whose sum is σ = 20775884. Its totient is φ = 20775882.

The previous prime is 20775857. The next prime is 20775899. The reversal of 20775883 is 38857702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20775883 - 2⁵ = 20775851 is a prime.

It is not a weakly prime, because it can be changed into another prime (20775383) 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, 10387941 + 10387942.

It is an arithmetic number, because the mean of its divisors is an integer number (10387942).

Almost surely, 2^20775883 is an apocalyptic number.

20775883 is a deficient number, since it is larger than the sum of its proper divisors (1).

20775883 is an equidigital number, since it uses as much as digits as its factorization.

20775883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 20775883 is about 4558.0569325097. The cubic root of 20775883 is about 274.9074421292.

The spelling of 20775883 in words is "twenty million, seven hundred seventy-five thousand, eight hundred eighty-three".