20700833 has 2 divisors, whose sum is σ = 20700834. Its totient is φ = 20700832.

The previous prime is 20700817. The next prime is 20700887. The reversal of 20700833 is 33800702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18939904 + 1760929 = 4352^2 + 1327^2 .

It is a cyclic number.

It is not a de Polignac number, because 20700833 - 2⁴ = 20700817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20700799 and 20700808.

It is not a weakly prime, because it can be changed into another prime (20700233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10350416 + 10350417.

It is an arithmetic number, because the mean of its divisors is an integer number (10350417).

Almost surely, 2^20700833 is an apocalyptic number.

It is an amenable number.

20700833 is a deficient number, since it is larger than the sum of its proper divisors (1).

20700833 is an equidigital number, since it uses as much as digits as its factorization.

20700833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20700833 is about 4549.8168094990. The cubic root of 20700833 is about 274.5760210501.

The spelling of 20700833 in words is "twenty million, seven hundred thousand, eight hundred thirty-three".