2640832805 has 48 divisors (see below), whose sum is σ = 3584714112. Its totient is φ = 1856131200.

The previous prime is 2640832739. The next prime is 2640832813. The reversal of 2640832805 is 5082380462.

It is not a de Polignac number, because 2640832805 - 2⁸ = 2640832549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4184840 + ... + 4185470.

It is an arithmetic number, because the mean of its divisors is an integer number (74681544).

Almost surely, 2^2640832805 is an apocalyptic number.

It is an amenable number.

2640832805 is a deficient number, since it is larger than the sum of its proper divisors (943881307).

2640832805 is a wasteful number, since it uses less digits than its factorization.

2640832805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2640832805 is about 51389.0338982939. The cubic root of 2640832805 is about 1382.2299598904.

The spelling of 2640832805 in words is "two billion, six hundred forty million, eight hundred thirty-two thousand, eight hundred five".