20750713 has 4 divisors (see below), whose sum is σ = 21102480. Its totient is φ = 20398948.

The previous prime is 20750701. The next prime is 20750767. The reversal of 20750713 is 31705702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20750713 - 2⁹ = 20750201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20750113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175795 + ... + 175912.

It is an arithmetic number, because the mean of its divisors is an integer number (5275620).

Almost surely, 2^20750713 is an apocalyptic number.

It is an amenable number.

20750713 is a deficient number, since it is larger than the sum of its proper divisors (351767).

20750713 is an equidigital number, since it uses as much as digits as its factorization.

20750713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351766.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 20750713 is about 4555.2950508172. The cubic root of 20750713 is about 274.7963803996.

The spelling of 20750713 in words is "twenty million, seven hundred fifty thousand, seven hundred thirteen".