2075809 has 2 divisors, whose sum is σ = 2075810. Its totient is φ = 2075808.

The previous prime is 2075803. The next prime is 2075813. The reversal of 2075809 is 9085702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 2209 = 1440^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 2075809 - 2¹³ = 2067617 is a prime.

2075809 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2075803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1037904 + 1037905.

It is an arithmetic number, because the mean of its divisors is an integer number (1037905).

2^2075809 is an apocalyptic number.

It is an amenable number.

2075809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2075809 is an equidigital number, since it uses as much as digits as its factorization.

2075809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 2075809 is about 1440.7668097232. The cubic root of 2075809 is about 127.5642941142.

The spelling of 2075809 in words is "two million, seventy-five thousand, eight hundred nine".