71082165 has 32 divisors (see below), whose sum is σ = 141797376. Its totient is φ = 29540160.

The previous prime is 71082149. The next prime is 71082299. The reversal of 71082165 is 56128017.

It is not a de Polignac number, because 71082165 - 2⁴ = 71082149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29617 + ... + 31926.

It is an arithmetic number, because the mean of its divisors is an integer number (4431168).

Almost surely, 2^71082165 is an apocalyptic number.

It is an amenable number.

71082165 is a deficient number, since it is larger than the sum of its proper divisors (70715211).

71082165 is a wasteful number, since it uses less digits than its factorization.

71082165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61569.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 71082165 is about 8431.0239591642. The cubic root of 71082165 is about 414.2414458956.

The spelling of 71082165 in words is "seventy-one million, eighty-two thousand, one hundred sixty-five".