71101681 has 8 divisors (see below), whose sum is σ = 82005440. Its totient is φ = 60384528.

The previous prime is 71101669. The next prime is 71101699. The reversal of 71101681 is 18610117.

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

It is a cyclic number.

It is not a de Polignac number, because 71101681 - 2⁹ = 71101169 is a prime.

It is a super-2 number, since 2×71101681² = 10110898082051522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71101651) 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, 45831 + ... + 47356.

It is an arithmetic number, because the mean of its divisors is an integer number (10250680).

Almost surely, 2^71101681 is an apocalyptic number.

It is an amenable number.

71101681 is a deficient number, since it is larger than the sum of its proper divisors (10903759).

71101681 is a wasteful number, since it uses less digits than its factorization.

71101681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93303.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 71101681 is about 8432.1812717707. The cubic root of 71101681 is about 414.2793531836.

Adding to 71101681 its reverse (18610117), we get a palindrome (89711798).

The spelling of 71101681 in words is "seventy-one million, one hundred one thousand, six hundred eighty-one".