2090705 has 8 divisors (see below), whose sum is σ = 2524392. Its totient is φ = 1662208.

The previous prime is 2090689. The next prime is 2090717. The reversal of 2090705 is 5070902.

It can be written as a sum of positive squares in 4 ways, for example, as 1227664 + 863041 = 1108^2 + 929^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2090705 - 2⁴ = 2090689 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8.

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, 344 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (315549).

2^2090705 is an apocalyptic number.

It is an amenable number.

2090705 is a deficient number, since it is larger than the sum of its proper divisors (433687).

2090705 is a wasteful number, since it uses less digits than its factorization.

2090705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 2090705 is about 1445.9270382699. The cubic root of 2090705 is about 127.8687008119.

The spelling of 2090705 in words is "two million, ninety thousand, seven hundred five".