20348717 has 2 divisors, whose sum is σ = 20348718. Its totient is φ = 20348716.

The previous prime is 20348707. The next prime is 20348719. The reversal of 20348717 is 71784302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13942756 + 6405961 = 3734^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 20348717 - 2²⁴ = 3571501 is a prime.

Together with 20348719, 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 (20348719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10174358 + 10174359.

It is an arithmetic number, because the mean of its divisors is an integer number (10174359).

Almost surely, 2^20348717 is an apocalyptic number.

It is an amenable number.

20348717 is a deficient number, since it is larger than the sum of its proper divisors (1).

20348717 is an equidigital number, since it uses as much as digits as its factorization.

20348717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 20348717 is about 4510.9552203497. The cubic root of 20348717 is about 273.0102864359.

The spelling of 20348717 in words is "twenty million, three hundred forty-eight thousand, seven hundred seventeen".