7887870868 has 12 divisors (see below), whose sum is σ = 14615760852. Its totient is φ = 3711939200.

The previous prime is 7887870853. The next prime is 7887870877. The reversal of 7887870868 is 8680787887.

It can be written as a sum of positive squares in 2 ways, for example, as 5680938384 + 2206932484 = 75372^2 + 46978^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57998983 + ... + 57999118.

It is an arithmetic number, because the mean of its divisors is an integer number (1217980071).

Almost surely, 2^7887870868 is an apocalyptic number.

It is an amenable number.

7887870868 is a deficient number, since it is larger than the sum of its proper divisors (6727889984).

7887870868 is a wasteful number, since it uses less digits than its factorization.

7887870868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115998122 (or 115998120 counting only the distinct ones).

The product of its (nonzero) digits is 67436544, while the sum is 67.

The square root of 7887870868 is about 88813.6862651247. The cubic root of 7887870868 is about 1990.6119064692.

The spelling of 7887870868 in words is "seven billion, eight hundred eighty-seven million, eight hundred seventy thousand, eight hundred sixty-eight".