20063761 has 4 divisors (see below), whose sum is σ = 20132532. Its totient is φ = 19994992.

The previous prime is 20063759. The next prime is 20063767. The reversal of 20063761 is 16736002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16966161 + 3097600 = 4119^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 20063761 - 2¹ = 20063759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20063767) 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, 33946 + ... + 34531.

It is an arithmetic number, because the mean of its divisors is an integer number (5033133).

Almost surely, 2^20063761 is an apocalyptic number.

It is an amenable number.

20063761 is a deficient number, since it is larger than the sum of its proper divisors (68771).

20063761 is an equidigital number, since it uses as much as digits as its factorization.

20063761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68770.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20063761 is about 4479.2589788937. The cubic root of 20063761 is about 271.7299122993.

Adding to 20063761 its reverse (16736002), we get a palindrome (36799763).

The spelling of 20063761 in words is "twenty million, sixty-three thousand, seven hundred sixty-one".