8520987 has 8 divisors (see below), whose sum is σ = 11959360. Its totient is φ = 5381640.

The previous prime is 8520979. The next prime is 8521003. The reversal of 8520987 is 7890258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8520987 - 2³ = 8520979 is a prime.

8520987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8520947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74689 + ... + 74802.

It is an arithmetic number, because the mean of its divisors is an integer number (1494920).

Almost surely, 2^8520987 is an apocalyptic number.

8520987 is a deficient number, since it is larger than the sum of its proper divisors (3438373).

8520987 is a wasteful number, since it uses less digits than its factorization.

8520987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149513.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 8520987 is about 2919.0729692832. The cubic root of 8520987 is about 204.2505811565.

The spelling of 8520987 in words is "eight million, five hundred twenty thousand, nine hundred eighty-seven".