2073805 has 8 divisors (see below), whose sum is σ = 2500344. Its totient is φ = 1651200.

The previous prime is 2073787. The next prime is 2073809. The reversal of 2073805 is 5083702.

It can be written as a sum of positive squares in 4 ways, for example, as 619369 + 1454436 = 787^2 + 1206^2 .

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

It is not a de Polignac number, because 2073805 - 2⁹ = 2073293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2073805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2073809) 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 7 ways as a sum of consecutive naturals, for example, 345 + ... + 2065.

It is an arithmetic number, because the mean of its divisors is an integer number (312543).

2^2073805 is an apocalyptic number.

It is an amenable number.

2073805 is a deficient number, since it is larger than the sum of its proper divisors (426539).

2073805 is a wasteful number, since it uses less digits than its factorization.

2073805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2073805 is about 1440.0711787964. The cubic root of 2073805 is about 127.5232304205.

The spelling of 2073805 in words is "two million, seventy-three thousand, eight hundred five".