71487 has 18 divisors (see below), whose sum is σ = 114192. Its totient is φ = 43056.

The previous prime is 71483. The next prime is 71503. The reversal of 71487 is 78417.

71487 is nontrivially palindromic in base 12.

It is not a de Polignac number, because 71487 - 2² = 71483 is a prime.

It is a super-2 number, since 2×71487² = 10220782338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1498 + ... + 1544.

It is an arithmetic number, because the mean of its divisors is an integer number (6344).

2⁷¹⁴⁸⁷ is an apocalyptic number.

71487 is a deficient number, since it is larger than the sum of its proper divisors (42705).

71487 is a wasteful number, since it uses less digits than its factorization.

71487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 63 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 71487 is about 267.3705294156. The cubic root of 71487 is about 41.5026368867.

The spelling of 71487 in words is "seventy-one thousand, four hundred eighty-seven".