2061365 has 4 divisors (see below), whose sum is σ = 2473644. Its totient is φ = 1649088.

The previous prime is 2061361. The next prime is 2061379. The reversal of 2061365 is 5631602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 1540081 = 722^2 + 1241^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061365 - 2² = 2061361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2061365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061361) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 206132 + ... + 206141.

It is an arithmetic number, because the mean of its divisors is an integer number (618411).

2^2061365 is an apocalyptic number.

It is an amenable number.

2061365 is a deficient number, since it is larger than the sum of its proper divisors (412279).

2061365 is an equidigital number, since it uses as much as digits as its factorization.

2061365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412278.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2061365 is about 1435.7454509766. The cubic root of 2061365 is about 127.2677304006.

Adding to 2061365 its reverse (5631602), we get a palindrome (7692967).

The spelling of 2061365 in words is "two million, sixty-one thousand, three hundred sixty-five".