8771667987 has 18 divisors (see below), whose sum is σ = 12231371236. Its totient is φ = 5591148200.

The previous prime is 8771667967. The next prime is 8771667991. The reversal of 8771667987 is 7897661778.

It is a happy number.

It is not a de Polignac number, because 8771667987 - 2¹¹ = 8771665939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8771667917) 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, 3729862 + ... + 3732212.

Almost surely, 2^8771667987 is an apocalyptic number.

8771667987 is a deficient number, since it is larger than the sum of its proper divisors (3459703249).

8771667987 is an frugal number, since it uses more digits than its factorization.

8771667987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751 (or 2377 counting only the distinct ones).

The product of its digits is 49787136, while the sum is 66.

The square root of 8771667987 is about 93657.1833176719. The cubic root of 8771667987 is about 2062.3421993357.

The spelling of 8771667987 in words is "eight billion, seven hundred seventy-one million, six hundred sixty-seven thousand, nine hundred eighty-seven".