71698 has 8 divisors (see below), whose sum is σ = 117360. Its totient is φ = 32580.

The previous prime is 71693. The next prime is 71699. The reversal of 71698 is 89617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (71693) by changing a digit.

71698 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608 + ... + 1651.

It is an arithmetic number, because the mean of its divisors is an integer number (14670).

2⁷¹⁶⁹⁸ is an apocalyptic number.

71698 is a deficient number, since it is larger than the sum of its proper divisors (45662).

71698 is a wasteful number, since it uses less digits than its factorization.

71698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272.

The product of its digits is 3024, while the sum is 31.

The square root of 71698 is about 267.7648221854. The cubic root of 71698 is about 41.5434296404.

The spelling of 71698 in words is "seventy-one thousand, six hundred ninety-eight".