20066759 has 4 divisors (see below), whose sum is σ = 20088000. Its totient is φ = 20045520.

The previous prime is 20066731. The next prime is 20066771. The reversal of 20066759 is 95766002.

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

It is a cyclic number.

It is not a de Polignac number, because 20066759 - 2⁸ = 20066503 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 (20066719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9134 + ... + 11115.

It is an arithmetic number, because the mean of its divisors is an integer number (5022000).

Almost surely, 2^20066759 is an apocalyptic number.

20066759 is a deficient number, since it is larger than the sum of its proper divisors (21241).

20066759 is an equidigital number, since it uses as much as digits as its factorization.

20066759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21240.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 20066759 is about 4479.5936199615. The cubic root of 20066759 is about 271.7434459152.

The spelling of 20066759 in words is "twenty million, sixty-six thousand, seven hundred fifty-nine".