2381065 has 8 divisors (see below), whose sum is σ = 2866248. Its totient is φ = 1898880.

The previous prime is 2381053. The next prime is 2381077. The reversal of 2381065 is 5601832.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2381053) and next prime (2381077).

It can be written as a sum of positive squares in 4 ways, for example, as 606841 + 1774224 = 779^2 + 1332^2 .

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

It is not a de Polignac number, because 2381065 - 2⁵ = 2381033 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 3¹¹ + 8 + 1 + 0 + 6⁸ + 5 .

It is a Duffinian number.

2381065 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (358281).

2^2381065 is an apocalyptic number.

It is an amenable number.

2381065 is a deficient number, since it is larger than the sum of its proper divisors (485183).

2381065 is a wasteful number, since it uses less digits than its factorization.

2381065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2381065 is about 1543.0699919317. The cubic root of 2381065 is about 133.5335568176.

Adding to 2381065 its reverse (5601832), we get a palindrome (7982897).

The spelling of 2381065 in words is "two million, three hundred eighty-one thousand, sixty-five".