8247987 has 20 divisors (see below), whose sum is σ = 13442616. Its totient is φ = 4998240.

The previous prime is 8247973. The next prime is 8247991. The reversal of 8247987 is 7897428.

It is not a de Polignac number, because 8247987 - 2⁶ = 8247923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8247947) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3738 + ... + 5519.

Almost surely, 2^8247987 is an apocalyptic number.

8247987 is a deficient number, since it is larger than the sum of its proper divisors (5194629).

8247987 is a wasteful number, since it uses less digits than its factorization.

8247987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9280 (or 9271 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 8247987 is about 2871.9308835694. The cubic root of 8247987 is about 202.0455653182.

The spelling of 8247987 in words is "eight million, two hundred forty-seven thousand, nine hundred eighty-seven".