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8487 = 322341
BaseRepresentation
bin10000100100111
3102122100
42010213
5232422
6103143
733513
oct20447
912570
108487
116416
124ab3
133b2b
143143
1527ac
hex2127

8487 has 12 divisors (see below), whose sum is σ = 13104. Its totient is φ = 5280.

The previous prime is 8467. The next prime is 8501. The reversal of 8487 is 7848.

It is a happy number.

8487 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8487 - 26 = 8423 is a prime.

It is an Ulam number.

8487 is a lucky number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 8487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187 + ... + 227.

It is an arithmetic number, because the mean of its divisors is an integer number (1092).

8487 is a deficient number, since it is larger than the sum of its proper divisors (4617).

8487 is a wasteful number, since it uses less digits than its factorization.

8487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 67 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 8487 is about 92.1249151967. The cubic root of 8487 is about 20.3978659821.

It can be divided in two parts, 84 and 87, that added together give a palindrome (171).

The spelling of 8487 in words is "eight thousand, four hundred eighty-seven".

Divisors: 1 3 9 23 41 69 123 207 369 943 2829 8487