2081365 has 32 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 1344000.

The previous prime is 2081353. The next prime is 2081369. The reversal of 2081365 is 5631802.

2081365 = 205² + 206² + ... + 245².

It is a happy number.

It is not a de Polignac number, because 2081365 - 2⁷ = 2081237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29280 + ... + 29350.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^2081365 is an apocalyptic number.

It is an amenable number.

2081365 is a deficient number, since it is larger than the sum of its proper divisors (966827).

2081365 is a wasteful number, since it uses less digits than its factorization.

2081365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141.

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

The square root of 2081365 is about 1442.6936611769. The cubic root of 2081365 is about 127.6780033275.

The spelling of 2081365 in words is "two million, eighty-one thousand, three hundred sixty-five".