7935878665 has 32 divisors (see below), whose sum is σ = 11202105600. Its totient is φ = 5320830720.

The previous prime is 7935878653. The next prime is 7935878689. The reversal of 7935878665 is 5668785397.

7935878665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7935878665 - 2¹⁷ = 7935747593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7935878597 and 7935878606.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 593271 + ... + 606499.

It is an arithmetic number, because the mean of its divisors is an integer number (350065800).

Almost surely, 2^7935878665 is an apocalyptic number.

It is an amenable number.

7935878665 is a deficient number, since it is larger than the sum of its proper divisors (3266226935).

7935878665 is a wasteful number, since it uses less digits than its factorization.

7935878665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14097.

The product of its digits is 76204800, while the sum is 64.

The square root of 7935878665 is about 89083.5487898860. The cubic root of 7935878665 is about 1994.6422153049.

The spelling of 7935878665 in words is "seven billion, nine hundred thirty-five million, eight hundred seventy-eight thousand, six hundred sixty-five".