20703959 has 2 divisors, whose sum is σ = 20703960. Its totient is φ = 20703958.

The previous prime is 20703937. The next prime is 20703961. The reversal of 20703959 is 95930702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20703959 is a prime.

Together with 20703961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20703919) 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, 10351979 + 10351980.

It is an arithmetic number, because the mean of its divisors is an integer number (10351980).

Almost surely, 2^20703959 is an apocalyptic number.

20703959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20703959 is an equidigital number, since it uses as much as digits as its factorization.

20703959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 20703959 is about 4550.1603268456. The cubic root of 20703959 is about 274.5898414511.

The spelling of 20703959 in words is "twenty million, seven hundred three thousand, nine hundred fifty-nine".