2644065 has 12 divisors (see below), whose sum is σ = 4583124. Its totient is φ = 1410144.

The previous prime is 2644063. The next prime is 2644067. The reversal of 2644065 is 5604462.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2644063) and next prime (2644067).

It can be written as a sum of positive squares in 2 ways, for example, as 1871424 + 772641 = 1368^2 + 879^2 .

It is not a de Polignac number, because 2644065 - 2¹ = 2644063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644063) 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, 29334 + ... + 29423.

It is an arithmetic number, because the mean of its divisors is an integer number (381927).

2^2644065 is an apocalyptic number.

It is an amenable number.

2644065 is a deficient number, since it is larger than the sum of its proper divisors (1939059).

2644065 is a wasteful number, since it uses less digits than its factorization.

2644065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58768 (or 58765 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2644065 is about 1626.0581170426. The cubic root of 2644065 is about 138.2793647641.

The spelling of 2644065 in words is "two million, six hundred forty-four thousand, sixty-five".