4086605 has 4 divisors (see below), whose sum is σ = 4903932. Its totient is φ = 3269280.

The previous prime is 4086569. The next prime is 4086611. The reversal of 4086605 is 5066804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 896809 + 3189796 = 947^2 + 1786^2 .

It is not a de Polignac number, because 4086605 - 2¹⁴ = 4070221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408656 + ... + 408665.

It is an arithmetic number, because the mean of its divisors is an integer number (1225983).

Almost surely, 2^4086605 is an apocalyptic number.

It is an amenable number.

4086605 is a deficient number, since it is larger than the sum of its proper divisors (817327).

4086605 is an equidigital number, since it uses as much as digits as its factorization.

4086605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817326.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 4086605 is about 2021.5353076313. The cubic root of 4086605 is about 159.8775756214.

The spelling of 4086605 in words is "four million, eighty-six thousand, six hundred five".