20050705 has 4 divisors (see below), whose sum is σ = 24060852. Its totient is φ = 16040560.

The previous prime is 20050663. The next prime is 20050711. The reversal of 20050705 is 50705002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50705002 = 2 ⋅25352501.

It can be written as a sum of positive squares in 2 ways, for example, as 6677056 + 13373649 = 2584^2 + 3657^2 .

It is not a de Polignac number, because 20050705 - 2¹³ = 20042513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2005066 + ... + 2005075.

It is an arithmetic number, because the mean of its divisors is an integer number (6015213).

Almost surely, 2^20050705 is an apocalyptic number.

It is an amenable number.

20050705 is a deficient number, since it is larger than the sum of its proper divisors (4010147).

20050705 is an equidigital number, since it uses as much as digits as its factorization.

20050705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010146.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 20050705 is about 4477.8013578094. The cubic root of 20050705 is about 271.6709589864.

Adding to 20050705 its reverse (50705002), we get a palindrome (70755707).

It can be divided in two parts, 200 and 50705, that added together give a palindrome (50905).

The spelling of 20050705 in words is "twenty million, fifty thousand, seven hundred five".