71898 has 16 divisors (see below), whose sum is σ = 150336. Its totient is φ = 22880.

The previous prime is 71887. The next prime is 71899. The reversal of 71898 is 89817.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123 + ... + 398.

It is an arithmetic number, because the mean of its divisors is an integer number (9396).

2⁷¹⁸⁹⁸ is an apocalyptic number.

71898 is an abundant number, since it is smaller than the sum of its proper divisors (78438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75168).

71898 is a wasteful number, since it uses less digits than its factorization.

71898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its digits is 4032, while the sum is 33.

The square root of 71898 is about 268.1380241592. The cubic root of 71898 is about 41.5820219407.

It can be divided in two parts, 71 and 898, that added together give a palindrome (969).

The spelling of 71898 in words is "seventy-one thousand, eight hundred ninety-eight".