4067865 has 12 divisors (see below), whose sum is σ = 7051044. Its totient is φ = 2169504.

The previous prime is 4067863. The next prime is 4067893. The reversal of 4067865 is 5687604.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 484416 + 3583449 = 696^2 + 1893^2 .

It is not a de Polignac number, because 4067865 - 2¹ = 4067863 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4067863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45154 + ... + 45243.

It is an arithmetic number, because the mean of its divisors is an integer number (587587).

Almost surely, 2^4067865 is an apocalyptic number.

4067865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4067865 is a deficient number, since it is larger than the sum of its proper divisors (2983179).

4067865 is a wasteful number, since it uses less digits than its factorization.

4067865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90408 (or 90405 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 4067865 is about 2016.8948906673. The cubic root of 4067865 is about 159.6328168521.

The spelling of 4067865 in words is "four million, sixty-seven thousand, eight hundred sixty-five".