147987 has 28 divisors (see below), whose sum is σ = 262320. Its totient is φ = 81648.

The previous prime is 147977. The next prime is 147997. The reversal of 147987 is 789741.

It is an interprime number because it is at equal distance from previous prime (147977) and next prime (147997).

It is not a de Polignac number, because 147987 - 2⁷ = 147859 is a prime.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147987.

It is not an unprimeable number, because it can be changed into a prime (147937) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 5089 + ... + 5117.

2¹⁴⁷⁹⁸⁷ is an apocalyptic number.

147987 is a deficient number, since it is larger than the sum of its proper divisors (114333).

147987 is an frugal number, since it uses more digits than its factorization.

147987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54 (or 39 counting only the distinct ones).

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

The square root of 147987 is about 384.6907849169. The cubic root of 147987 is about 52.8941759329.

It can be divided in two parts, 14 and 7987, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 147987 in words is "one hundred forty-seven thousand, nine hundred eighty-seven".