978271 has 4 divisors (see below), whose sum is σ = 1118032. Its totient is φ = 838512.

The previous prime is 978269. The next prime is 978277. The reversal of 978271 is 172879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172879 = 7 ⋅24697.

It is a cyclic number.

It is not a de Polignac number, because 978271 - 2¹ = 978269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978277) 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, 69870 + ... + 69883.

It is an arithmetic number, because the mean of its divisors is an integer number (279508).

2⁹⁷⁸²⁷¹ is an apocalyptic number.

978271 is a deficient number, since it is larger than the sum of its proper divisors (139761).

978271 is a wasteful number, since it uses less digits than its factorization.

978271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139760.

The product of its digits is 7056, while the sum is 34.

The square root of 978271 is about 989.0758312688. The cubic root of 978271 is about 99.2703896336.

The spelling of 978271 in words is "nine hundred seventy-eight thousand, two hundred seventy-one".