20700265 has 4 divisors (see below), whose sum is σ = 24840324. Its totient is φ = 16560208.

The previous prime is 20700233. The next prime is 20700269. The reversal of 20700265 is 56200702.

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 14653584 + 6046681 = 3828^2 + 2459^2 .

It is a cyclic number.

It is not a de Polignac number, because 20700265 - 2⁵ = 20700233 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20700269) 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, 2070022 + ... + 2070031.

It is an arithmetic number, because the mean of its divisors is an integer number (6210081).

Almost surely, 2^20700265 is an apocalyptic number.

It is an amenable number.

20700265 is a deficient number, since it is larger than the sum of its proper divisors (4140059).

20700265 is an equidigital number, since it uses as much as digits as its factorization.

20700265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140058.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20700265 is about 4549.7543889753. The cubic root of 20700265 is about 274.5735097082.

Adding to 20700265 its reverse (56200702), we get a palindrome (76900967).

The spelling of 20700265 in words is "twenty million, seven hundred thousand, two hundred sixty-five".