12642065 has 16 divisors (see below), whose sum is σ = 15935616. Its totient is φ = 9609600.

The previous prime is 12642061. The next prime is 12642083. The reversal of 12642065 is 56024621.

It is not a de Polignac number, because 12642065 - 2² = 12642061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12642061) 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, 24005 + ... + 24525.

It is an arithmetic number, because the mean of its divisors is an integer number (995976).

Almost surely, 2^12642065 is an apocalyptic number.

It is an amenable number.

12642065 is a deficient number, since it is larger than the sum of its proper divisors (3293551).

12642065 is a wasteful number, since it uses less digits than its factorization.

12642065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 12642065 is about 3555.5681683804. The cubic root of 12642065 is about 232.9553415119.

Adding to 12642065 its reverse (56024621), we get a palindrome (68666686).

The spelling of 12642065 in words is "twelve million, six hundred forty-two thousand, sixty-five".