2080805 has 8 divisors (see below), whose sum is σ = 2507544. Its totient is φ = 1657600.

The previous prime is 2080801. The next prime is 2080807. The reversal of 2080805 is 5080802.

It can be written as a sum of positive squares in 4 ways, for example, as 279841 + 1800964 = 529^2 + 1342^2 .

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

It is not a de Polignac number, because 2080805 - 2² = 2080801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2080801) 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, 665 + ... + 2145.

It is an arithmetic number, because the mean of its divisors is an integer number (313443).

2^2080805 is an apocalyptic number.

It is an amenable number.

2080805 is a deficient number, since it is larger than the sum of its proper divisors (426739).

2080805 is a wasteful number, since it uses less digits than its factorization.

2080805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 2080805 is about 1442.4995667244. The cubic root of 2080805 is about 127.6665515326. Note that the first 3 decimals are identical.

It can be divided in two parts, 208080 and 5, that multiplied together give a square (1040400 = 1020²).

The spelling of 2080805 in words is "two million, eighty thousand, eight hundred five".