2645065 has 8 divisors (see below), whose sum is σ = 3191688. Its totient is φ = 2104320.

The previous prime is 2645063. The next prime is 2645087. The reversal of 2645065 is 5605462.

It can be written as a sum of positive squares in 4 ways, for example, as 17424 + 2627641 = 132^2 + 1621^2 .

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

It is not a de Polignac number, because 2645065 - 2¹ = 2645063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406 + ... + 2335.

It is an arithmetic number, because the mean of its divisors is an integer number (398961).

2^2645065 is an apocalyptic number.

It is an amenable number.

2645065 is a deficient number, since it is larger than the sum of its proper divisors (546623).

2645065 is a wasteful number, since it uses less digits than its factorization.

2645065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2645065 is about 1626.3655800588. The cubic root of 2645065 is about 138.2967952403.

It can be divided in two parts, 264 and 5065, that added together give a square (5329 = 73²).

The spelling of 2645065 in words is "two million, six hundred forty-five thousand, sixty-five".