71708871 has 16 divisors (see below), whose sum is σ = 107444736. Its totient is φ = 42209376.

The previous prime is 71708809. The next prime is 71708893. The reversal of 71708871 is 17880717.

It is not a de Polignac number, because 71708871 - 2⁶ = 71708807 is a prime.

It is a super-3 number, since 3×71708871³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71708801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39075 + ... + 40868.

It is an arithmetic number, because the mean of its divisors is an integer number (6715296).

Almost surely, 2^71708871 is an apocalyptic number.

71708871 is a deficient number, since it is larger than the sum of its proper divisors (35735865).

71708871 is a wasteful number, since it uses less digits than its factorization.

71708871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79982.

The product of its (nonzero) digits is 21952, while the sum is 39.

The square root of 71708871 is about 8468.1090569265. The cubic root of 71708871 is about 415.4552916803.

The spelling of 71708871 in words is "seventy-one million, seven hundred eight thousand, eight hundred seventy-one".