20703533 has 2 divisors, whose sum is σ = 20703534. Its totient is φ = 20703532.

The previous prime is 20703503. The next prime is 20703539. The reversal of 20703533 is 33530702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14160169 + 6543364 = 3763^2 + 2558^2 .

It is a cyclic number.

It is not a de Polignac number, because 20703533 - 2¹⁶ = 20637997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20703499 and 20703508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20703539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10351766 + 10351767.

It is an arithmetic number, because the mean of its divisors is an integer number (10351767).

Almost surely, 2^20703533 is an apocalyptic number.

It is an amenable number.

20703533 is a deficient number, since it is larger than the sum of its proper divisors (1).

20703533 is an equidigital number, since it uses as much as digits as its factorization.

20703533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 23.

The square root of 20703533 is about 4550.1135150675. The cubic root of 20703533 is about 274.5879581386.

The spelling of 20703533 in words is "twenty million, seven hundred three thousand, five hundred thirty-three".