4086705 has 16 divisors (see below), whose sum is σ = 7473024. Its totient is φ = 1868160.

The previous prime is 4086683. The next prime is 4086713. The reversal of 4086705 is 5076804.

It is a happy number.

It is not a de Polignac number, because 4086705 - 2⁵ = 4086673 is a prime.

4086705 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19356 + ... + 19565.

It is an arithmetic number, because the mean of its divisors is an integer number (467064).

Almost surely, 2^4086705 is an apocalyptic number.

It is an amenable number.

4086705 is a deficient number, since it is larger than the sum of its proper divisors (3386319).

4086705 is a wasteful number, since it uses less digits than its factorization.

4086705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38936.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 4086705 is about 2021.5600411563. The cubic root of 4086705 is about 159.8788796890.

Subtracting 4086705 from its reverse (5076804), we obtain a palindrome (990099).

The spelling of 4086705 in words is "four million, eighty-six thousand, seven hundred five".