71004 has 24 divisors (see below), whose sum is σ = 170128. Its totient is φ = 23040.

The previous prime is 70999. The next prime is 71011. The reversal of 71004 is 40017.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

71004 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684 + ... + 780.

2⁷¹⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

71004 is an abundant number, since it is smaller than the sum of its proper divisors (99124).

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 (85064).

71004 is a wasteful number, since it uses less digits than its factorization.

71004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 71004 is about 266.4657576500. The cubic root of 71004 is about 41.4089550980.

The spelling of 71004 in words is "seventy-one thousand, four", and thus it is an iban number.