20360065 has 24 divisors (see below), whose sum is σ = 27282024. Its totient is φ = 14572800.

The previous prime is 20360063. The next prime is 20360069. The reversal of 20360065 is 56006302.

It can be written as a sum of positive squares in 4 ways, for example, as 1385329 + 18974736 = 1177^2 + 4356^2 .

It is not a de Polignac number, because 20360065 - 2¹ = 20360063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20360063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43935 + ... + 44395.

It is an arithmetic number, because the mean of its divisors is an integer number (1136751).

Almost surely, 2^20360065 is an apocalyptic number.

It is an amenable number.

20360065 is a deficient number, since it is larger than the sum of its proper divisors (6921959).

20360065 is a wasteful number, since it uses less digits than its factorization.

20360065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 20360065 is about 4512.2128717515. The cubic root of 20360065 is about 273.0610274727.

Adding to 20360065 its reverse (56006302), we get a palindrome (76366367).

The spelling of 20360065 in words is "twenty million, three hundred sixty thousand, sixty-five".