20741065 has 16 divisors (see below), whose sum is σ = 26452800. Its totient is φ = 15567552.

The previous prime is 20741059. The next prime is 20741069. The reversal of 20741065 is 56014702.

It is a cyclic number.

It is not a de Polignac number, because 20741065 - 2⁵ = 20741033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20741069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9354 + ... + 11356.

It is an arithmetic number, because the mean of its divisors is an integer number (1653300).

Almost surely, 2^20741065 is an apocalyptic number.

It is an amenable number.

20741065 is a deficient number, since it is larger than the sum of its proper divisors (5711735).

20741065 is a wasteful number, since it uses less digits than its factorization.

20741065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20741065 is about 4554.2359403088. The cubic root of 20741065 is about 274.7537851327.

Adding to 20741065 its reverse (56014702), we get a palindrome (76755767).

The spelling of 20741065 in words is "twenty million, seven hundred forty-one thousand, sixty-five".