8487865 has 8 divisors (see below), whose sum is σ = 10536840. Its totient is φ = 6556032.

The previous prime is 8487863. The next prime is 8487881. The reversal of 8487865 is 5687848.

8487865 = T₈₂ + T₈₃ + ... + T₃₇₁.

8487865 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 558009 + 7929856 = 747^2 + 2816^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 8487865 - 2¹ = 8487863 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8487863) 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, 29124 + ... + 29413.

It is an arithmetic number, because the mean of its divisors is an integer number (1317105).

Almost surely, 2^8487865 is an apocalyptic number.

It is an amenable number.

8487865 is a deficient number, since it is larger than the sum of its proper divisors (2048975).

8487865 is a wasteful number, since it uses less digits than its factorization.

8487865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58571.

The product of its digits is 430080, while the sum is 46.

The square root of 8487865 is about 2913.3940687796. The cubic root of 8487865 is about 203.9855894601.

The spelling of 8487865 in words is "eight million, four hundred eighty-seven thousand, eight hundred sixty-five".