987347 has 4 divisors (see below), whose sum is σ = 995016. Its totient is φ = 979680.

The previous prime is 987313. The next prime is 987353. The reversal of 987347 is 743789.

987347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743789 = 139 ⋅5351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 987347.

It is not an unprimeable number, because it can be changed into a prime (983347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638 + ... + 3899.

It is an arithmetic number, because the mean of its divisors is an integer number (248754).

2⁹⁸⁷³⁴⁷ is an apocalyptic number.

987347 is a deficient number, since it is larger than the sum of its proper divisors (7669).

987347 is a wasteful number, since it uses less digits than its factorization.

987347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7668.

The product of its digits is 42336, while the sum is 38.

The square root of 987347 is about 993.6533600809. The cubic root of 987347 is about 99.5764418512.

The spelling of 987347 in words is "nine hundred eighty-seven thousand, three hundred forty-seven".