71385 has 8 divisors (see below), whose sum is σ = 114240. Its totient is φ = 38064.

The previous prime is 71363. The next prime is 71387. The reversal of 71385 is 58317.

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

It is not a de Polignac number, because 71385 - 2⁵ = 71353 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71387) 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, 2365 + ... + 2394.

It is an arithmetic number, because the mean of its divisors is an integer number (14280).

2⁷¹³⁸⁵ is an apocalyptic number.

It is an amenable number.

71385 is a deficient number, since it is larger than the sum of its proper divisors (42855).

71385 is a wasteful number, since it uses less digits than its factorization.

71385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767.

The product of its digits is 840, while the sum is 24.

The square root of 71385 is about 267.1797147989. The cubic root of 71385 is about 41.4828883825.

The spelling of 71385 in words is "seventy-one thousand, three hundred eighty-five".