71896161 has 16 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 45594960.

The previous prime is 71896157. The next prime is 71896169. The reversal of 71896161 is 16169817.

It is not a de Polignac number, because 71896161 - 2² = 71896157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71896169) 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, 1065 + ... + 12038.

It is an arithmetic number, because the mean of its divisors is an integer number (6289920).

Almost surely, 2^71896161 is an apocalyptic number.

It is an amenable number.

71896161 is a deficient number, since it is larger than the sum of its proper divisors (28742559).

71896161 is a wasteful number, since it uses less digits than its factorization.

71896161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13196.

The product of its digits is 18144, while the sum is 39.

The square root of 71896161 is about 8479.1603947561. The cubic root of 71896161 is about 415.8166741072.

The spelling of 71896161 in words is "seventy-one million, eight hundred ninety-six thousand, one hundred sixty-one".