4056665 has 16 divisors (see below), whose sum is σ = 5104080. Its totient is φ = 3091200.

The previous prime is 4056641. The next prime is 4056697. The reversal of 4056665 is 5666504.

It can be written as a sum of positive squares in 8 ways, for example, as 12544 + 4044121 = 112^2 + 2011^2 .

It is not a de Polignac number, because 4056665 - 2⁶ = 4056601 is a prime.

It is a Curzon 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, 14507 + ... + 14783.

It is an arithmetic number, because the mean of its divisors is an integer number (319005).

Almost surely, 2^4056665 is an apocalyptic number.

It is an amenable number.

4056665 is a deficient number, since it is larger than the sum of its proper divisors (1047415).

4056665 is a wasteful number, since it uses less digits than its factorization.

4056665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 4056665 is about 2014.1164315898. The cubic root of 4056665 is about 159.4861772005.

The spelling of 4056665 in words is "four million, fifty-six thousand, six hundred sixty-five".