20743703 has 2 divisors, whose sum is σ = 20743704. Its totient is φ = 20743702.

The previous prime is 20743693. The next prime is 20743711. The reversal of 20743703 is 30734702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20743703 is a prime.

It is a Chen prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20743103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10371851 + 10371852.

It is an arithmetic number, because the mean of its divisors is an integer number (10371852).

Almost surely, 2^20743703 is an apocalyptic number.

20743703 is a deficient number, since it is larger than the sum of its proper divisors (1).

20743703 is an equidigital number, since it uses as much as digits as its factorization.

20743703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 20743703 is about 4554.5255515805. The cubic root of 20743703 is about 274.7654330360.

Subtracting 20743703 from its reverse (30734702), we obtain a palindrome (9990999).

The spelling of 20743703 in words is "twenty million, seven hundred forty-three thousand, seven hundred three".