2685705 has 32 divisors (see below), whose sum is σ = 4814208. Its totient is φ = 1267200.

The previous prime is 2685703. The next prime is 2685731. The reversal of 2685705 is 5075862.

It is a happy number.

2685705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2685705 - 2¹ = 2685703 is a prime.

It is a super-2 number, since 2×2685705² = 14426022694050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

2685705 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2685703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6567 + ... + 6963.

It is an arithmetic number, because the mean of its divisors is an integer number (150444).

2^2685705 is an apocalyptic number.

It is an amenable number.

2685705 is a deficient number, since it is larger than the sum of its proper divisors (2128503).

2685705 is a wasteful number, since it uses less digits than its factorization.

2685705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 2685705 is about 1638.8120697627. The cubic root of 2685705 is about 139.0014836893.

The spelling of 2685705 in words is "two million, six hundred eighty-five thousand, seven hundred five".