4065075405 has 24 divisors (see below), whose sum is σ = 7058558520. Its totient is φ = 2164216320.

The previous prime is 4065075401. The next prime is 4065075437. The reversal of 4065075405 is 5045705604.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 66536649 + 3998538756 = 8157^2 + 63234^2 .

It is not a de Polignac number, because 4065075405 - 2² = 4065075401 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4065075405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065075401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53776 + ... + 104985.

It is an arithmetic number, because the mean of its divisors is an integer number (294106605).

Almost surely, 2^4065075405 is an apocalyptic number.

4065075405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4065075405 is a deficient number, since it is larger than the sum of its proper divisors (2993483115).

4065075405 is a wasteful number, since it uses less digits than its factorization.

4065075405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159341 (or 159338 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 36.

The square root of 4065075405 is about 63757.9438580009. The cubic root of 4065075405 is about 1595.9631836628.

The spelling of 4065075405 in words is "four billion, sixty-five million, seventy-five thousand, four hundred five".