20007065 has 12 divisors (see below), whose sum is σ = 25998444. Its totient is φ = 14773824.

The previous prime is 20007061. The next prime is 20007107. The reversal of 20007065 is 56070002.

It can be written as a sum of positive squares in 6 ways, for example, as 4804864 + 15202201 = 2192^2 + 3899^2 .

It is not a de Polignac number, because 20007065 - 2² = 20007061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20007061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10994 + ... + 12683.

It is an arithmetic number, because the mean of its divisors is an integer number (2166537).

Almost surely, 2^20007065 is an apocalyptic number.

It is an amenable number.

20007065 is a deficient number, since it is larger than the sum of its proper divisors (5991379).

20007065 is a wasteful number, since it uses less digits than its factorization.

20007065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23708 (or 23695 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 20007065 is about 4472.9257762677. The cubic root of 20007065 is about 271.4737201641.

Adding to 20007065 its reverse (56070002), we get a palindrome (76077067).

The spelling of 20007065 in words is "twenty million, seven thousand, sixty-five".