71158641 has 8 divisors (see below), whose sum is σ = 95817984. Its totient is φ = 46969200.

The previous prime is 71158627. The next prime is 71158643. The reversal of 71158641 is 14685117.

It is a happy number.

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

It is not a de Polignac number, because 71158641 - 2¹⁹ = 70634353 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (71158643) 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, 117121 + ... + 117726.

It is an arithmetic number, because the mean of its divisors is an integer number (11977248).

Almost surely, 2^71158641 is an apocalyptic number.

It is an amenable number.

71158641 is a deficient number, since it is larger than the sum of its proper divisors (24659343).

71158641 is a wasteful number, since it uses less digits than its factorization.

71158641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234951.

The product of its digits is 6720, while the sum is 33.

The square root of 71158641 is about 8435.5581320977. The cubic root of 71158641 is about 414.3899509130.

The spelling of 71158641 in words is "seventy-one million, one hundred fifty-eight thousand, six hundred forty-one".