71870 has 8 divisors (see below), whose sum is σ = 129384. Its totient is φ = 28744.

The previous prime is 71867. The next prime is 71879. The reversal of 71870 is 7817.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71879) 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, 3584 + ... + 3603.

It is an arithmetic number, because the mean of its divisors is an integer number (16173).

2⁷¹⁸⁷⁰ is an apocalyptic number.

71870 is a deficient number, since it is larger than the sum of its proper divisors (57514).

71870 is a wasteful number, since it uses less digits than its factorization.

71870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7194.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 71870 is about 268.0858071588. The cubic root of 71870 is about 41.5766233307.

The spelling of 71870 in words is "seventy-one thousand, eight hundred seventy".