20703733 has 2 divisors, whose sum is σ = 20703734. Its totient is φ = 20703732.

The previous prime is 20703731. The next prime is 20703743. The reversal of 20703733 is 33730702.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20052484 + 651249 = 4478^2 + 807^2 .

It is a cyclic number.

It is not a de Polignac number, because 20703733 - 2¹ = 20703731 is a prime.

Together with 20703731, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20703698 and 20703707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20703731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10351866 + 10351867.

It is an arithmetic number, because the mean of its divisors is an integer number (10351867).

Almost surely, 2^20703733 is an apocalyptic number.

It is an amenable number.

20703733 is a deficient number, since it is larger than the sum of its proper divisors (1).

20703733 is an equidigital number, since it uses as much as digits as its factorization.

20703733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 25.

The square root of 20703733 is about 4550.1354924881. The cubic root of 20703733 is about 274.5888423261.

The spelling of 20703733 in words is "twenty million, seven hundred three thousand, seven hundred thirty-three".