71704 has 8 divisors (see below), whose sum is σ = 134460. Its totient is φ = 35848.

The previous prime is 71699. The next prime is 71707. The reversal of 71704 is 40717.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71707) by changing a digit.

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 as a sum of consecutive naturals, namely, 4474 + ... + 4489.

2⁷¹⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

71704 is a deficient number, since it is larger than the sum of its proper divisors (62756).

71704 is a wasteful number, since it uses less digits than its factorization.

71704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8969 (or 8965 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 71704 is about 267.7760258126. The cubic root of 71704 is about 41.5445884529.

It can be divided in two parts, 7170 and 4, that multiplied together give a triangular number (28680 = T₂₃₉).

The spelling of 71704 in words is "seventy-one thousand, seven hundred four", and thus it is an iban number.