20896703 has 4 divisors (see below), whose sum is σ = 20925720. Its totient is φ = 20867688.

The previous prime is 20896693. The next prime is 20896721. The reversal of 20896703 is 30769802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20896703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20896783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13400 + ... + 14877.

It is an arithmetic number, because the mean of its divisors is an integer number (5231430).

Almost surely, 2^20896703 is an apocalyptic number.

20896703 is a deficient number, since it is larger than the sum of its proper divisors (29017).

20896703 is an equidigital number, since it uses as much as digits as its factorization.

20896703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29016.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20896703 is about 4571.2911742745. The cubic root of 20896703 is about 275.4393110523.

The spelling of 20896703 in words is "twenty million, eight hundred ninety-six thousand, seven hundred three".