7872616587 has 18 divisors (see below), whose sum is σ = 11540307324. Its totient is φ = 4770258240.

The previous prime is 7872616481. The next prime is 7872616627. The reversal of 7872616587 is 7856162787.

It is not a de Polignac number, because 7872616587 - 2¹⁰ = 7872615563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7872616987) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1688163 + ... + 1692819.

Almost surely, 2^7872616587 is an apocalyptic number.

7872616587 is a deficient number, since it is larger than the sum of its proper divisors (3667690737).

7872616587 is an frugal number, since it uses more digits than its factorization.

7872616587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9339 (or 4671 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 57.

The square root of 7872616587 is about 88727.7667193309. The cubic root of 7872616587 is about 1989.3278696920.

The spelling of 7872616587 in words is "seven billion, eight hundred seventy-two million, six hundred sixteen thousand, five hundred eighty-seven".