20601065 has 8 divisors (see below), whose sum is σ = 25324488. Its totient is φ = 16078720.

The previous prime is 20601037. The next prime is 20601079. The reversal of 20601065 is 56010602.

It can be written as a sum of positive squares in 4 ways, for example, as 3519376 + 17081689 = 1876^2 + 4133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20601065 - 2⁸ = 20600809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50042 + ... + 50451.

It is an arithmetic number, because the mean of its divisors is an integer number (3165561).

Almost surely, 2^20601065 is an apocalyptic number.

It is an amenable number.

20601065 is a deficient number, since it is larger than the sum of its proper divisors (4723423).

20601065 is a wasteful number, since it uses less digits than its factorization.

20601065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100539.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20601065 is about 4538.8396094156. The cubic root of 20601065 is about 274.1342026439.

Adding to 20601065 its reverse (56010602), we get a palindrome (76611667).

It can be divided in two parts, 2060 and 1065, that added together give a 5-th power (3125 = 5⁵).

The spelling of 20601065 in words is "twenty million, six hundred one thousand, sixty-five".