7895775987 has 72 divisors (see below), whose sum is σ = 13633427808. Its totient is φ = 4381724160.

The previous prime is 7895775947. The next prime is 7895775989.

It is a happy number.

7895775987 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7895775987 - 2¹⁰ = 7895774963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7895775989) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 679218 + ... + 690744.

It is an arithmetic number, because the mean of its divisors is an integer number (189353164).

Almost surely, 2^7895775987 is an apocalyptic number.

7895775987 is a deficient number, since it is larger than the sum of its proper divisors (5737651821).

7895775987 is a wasteful number, since it uses less digits than its factorization.

7895775987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11609 (or 11595 counting only the distinct ones).

The product of its digits is 311169600, while the sum is 72.

The square root of 7895775987 is about 88858.1790664202. The cubic root of 7895775987 is about 1991.2766726814.

The spelling of 7895775987 in words is "seven billion, eight hundred ninety-five million, seven hundred seventy-five thousand, nine hundred eighty-seven".