4056685 has 4 divisors (see below), whose sum is σ = 4868028. Its totient is φ = 3245344.

The previous prime is 4056641. The next prime is 4056697. The reversal of 4056685 is 5866504.

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 3034564 + 1022121 = 1742^2 + 1011^2 .

It is a cyclic number.

It is not a de Polignac number, because 4056685 - 2¹⁷ = 3925613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4056685.

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, 405664 + ... + 405673.

It is an arithmetic number, because the mean of its divisors is an integer number (1217007).

Almost surely, 2^4056685 is an apocalyptic number.

It is an amenable number.

4056685 is a deficient number, since it is larger than the sum of its proper divisors (811343).

4056685 is an equidigital number, since it uses as much as digits as its factorization.

4056685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811342.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 4056685 is about 2014.1213965399. The cubic root of 4056685 is about 159.4864392974.

The spelling of 4056685 in words is "four million, fifty-six thousand, six hundred eighty-five".