8731487 has 4 divisors (see below), whose sum is σ = 8737560. Its totient is φ = 8725416.

The previous prime is 8731477. The next prime is 8731493. The reversal of 8731487 is 7841378.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7841378 = 2 ⋅3920689.

It is a cyclic number.

It is not a de Polignac number, because 8731487 - 2⁸ = 8731231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8731487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8731417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 4205.

It is an arithmetic number, because the mean of its divisors is an integer number (2184390).

Almost surely, 2^8731487 is an apocalyptic number.

8731487 is a deficient number, since it is larger than the sum of its proper divisors (6073).

8731487 is a wasteful number, since it uses less digits than its factorization.

8731487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072.

The product of its digits is 37632, while the sum is 38.

The square root of 8731487 is about 2954.9089664489. The cubic root of 8731487 is about 205.9188340812.

The spelling of 8731487 in words is "eight million, seven hundred thirty-one thousand, four hundred eighty-seven".