987471 has 20 divisors (see below), whose sum is σ = 1504272. Its totient is φ = 645408.

The previous prime is 987463. The next prime is 987473. The reversal of 987471 is 174789.

It is not a de Polignac number, because 987471 - 2³ = 987463 is a prime.

It is a super-3 number, since 3×987471³ = 2888645882318064333, which contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (14112) is a multiple of the sum of its prime factors (252).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987471.

It is not an unprimeable number, because it can be changed into a prime (987473) 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 19 ways as a sum of consecutive naturals, for example, 5830 + ... + 5996.

2⁹⁸⁷⁴⁷¹ is an apocalyptic number.

987471 is a deficient number, since it is larger than the sum of its proper divisors (516801).

987471 is a wasteful number, since it uses less digits than its factorization.

987471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 243 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 987471 is about 993.7157541269. The cubic root of 987471 is about 99.5806102479.

It can be divided in two parts, 98 and 7471, that added together give a square (7569 = 87²).

The spelling of 987471 in words is "nine hundred eighty-seven thousand, four hundred seventy-one".