4065775605 has 24 divisors (see below), whose sum is σ = 7101151200. Its totient is φ = 2151857760.

The previous prime is 4065775541. The next prime is 4065775627. The reversal of 4065775605 is 5065775604.

It is not a de Polignac number, because 4065775605 - 2⁶ = 4065775541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 338955 + ... + 350744.

It is an arithmetic number, because the mean of its divisors is an integer number (295881300).

Almost surely, 2^4065775605 is an apocalyptic number.

4065775605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4065775605 is a deficient number, since it is larger than the sum of its proper divisors (3035375595).

4065775605 is a wasteful number, since it uses less digits than its factorization.

4065775605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689841 (or 689838 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The square root of 4065775605 is about 63763.4347020297. The cubic root of 4065775605 is about 1596.0548120791.

Subtracting 4065775605 from its reverse (5065775604), we obtain a palindrome (999999999).

The spelling of 4065775605 in words is "four billion, sixty-five million, seven hundred seventy-five thousand, six hundred five".