4065705 has 24 divisors (see below), whose sum is σ = 8054592. Its totient is φ = 1858464.

The previous prime is 4065701. The next prime is 4065727. The reversal of 4065705 is 5075604.

4065705 is a `hidden beast` number, since 4 + 0 + 657 + 0 + 5 = 666.

4065705 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 4065705 - 2² = 4065701 is a prime.

4065705 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4065701) 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 23 ways as a sum of consecutive naturals, for example, 6139 + ... + 6768.

It is an arithmetic number, because the mean of its divisors is an integer number (335608).

Almost surely, 2^4065705 is an apocalyptic number.

4065705 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4065705 is a deficient number, since it is larger than the sum of its proper divisors (3988887).

4065705 is a wasteful number, since it uses less digits than its factorization.

4065705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12925 (or 12922 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 4065705 is about 2016.3593429744. The cubic root of 4065705 is about 159.6045573161.

The spelling of 4065705 in words is "four million, sixty-five thousand, seven hundred five".