6413875065 has 24 divisors (see below), whose sum is σ = 11972567880. Its totient is φ = 3157599744.

The previous prime is 6413875033. The next prime is 6413875067. The reversal of 6413875065 is 5605783146.

6413875065 is a `hidden beast` number, since 6 + 4 + 138 + 7 + 506 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1343295801 + 5070579264 = 36651^2 + 71208^2 .

It is not a de Polignac number, because 6413875065 - 2⁵ = 6413875033 is a prime.

It is a super-2 number, since 2×6413875065² = 82275586698857508450, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6413875065.

It is not an unprimeable number, because it can be changed into a prime (6413875067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5481360 + ... + 5482529.

It is an arithmetic number, because the mean of its divisors is an integer number (498856995).

Almost surely, 2^6413875065 is an apocalyptic number.

6413875065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6413875065 is a deficient number, since it is larger than the sum of its proper divisors (5558692815).

6413875065 is a wasteful number, since it uses less digits than its factorization.

6413875065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10963913 (or 10963910 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 6413875065 is about 80086.6722058046. The cubic root of 6413875065 is about 1857.9762805653.

The spelling of 6413875065 in words is "six billion, four hundred thirteen million, eight hundred seventy-five thousand, sixty-five".