8646680405 has 16 divisors (see below), whose sum is σ = 11625220224. Its totient is φ = 6118534080.

The previous prime is 8646680347. The next prime is 8646680407. The reversal of 8646680405 is 5040866468.

It is a happy number.

8646680405 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 8646680405 - 2³² = 4351713109 is a prime.

It is a Duffinian number.

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 8646680405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8646680407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2122457 + ... + 2126526.

It is an arithmetic number, because the mean of its divisors is an integer number (726576264).

Almost surely, 2^8646680405 is an apocalyptic number.

It is an amenable number.

8646680405 is a deficient number, since it is larger than the sum of its proper divisors (2978539819).

8646680405 is a wasteful number, since it uses less digits than its factorization.

8646680405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249036.

The product of its (nonzero) digits is 1105920, while the sum is 47.

The square root of 8646680405 is about 92987.5282228751. The cubic root of 8646680405 is about 2052.4998577238.

The spelling of 8646680405 in words is "eight billion, six hundred forty-six million, six hundred eighty thousand, four hundred five".