71715 has 16 divisors (see below), whose sum is σ = 131328. Its totient is φ = 32736.

The previous prime is 71713. The next prime is 71719. The reversal of 71715 is 51717.

It is not a de Polignac number, because 71715 - 2¹ = 71713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 71691 and 71700.

It is not an unprimeable number, because it can be changed into a prime (71711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237 + ... + 446.

It is an arithmetic number, because the mean of its divisors is an integer number (8208).

2⁷¹⁷¹⁵ is an apocalyptic number.

71715 is a deficient number, since it is larger than the sum of its proper divisors (59613).

71715 is a wasteful number, since it uses less digits than its factorization.

71715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698.

The product of its digits is 245, while the sum is 21.

The square root of 71715 is about 267.7965645784. The cubic root of 71715 is about 41.5467127747.

The spelling of 71715 in words is "seventy-one thousand, seven hundred fifteen".