71926681 has 8 divisors (see below), whose sum is σ = 76083840. Its totient is φ = 67855392.

The previous prime is 71926667. The next prime is 71926697. The reversal of 71926681 is 18662917.

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 71926681 - 2²³ = 63538073 is a prime.

It is a super-2 number, since 2×71926681² = 10346894879351522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71926601) 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 7 ways as a sum of consecutive naturals, for example, 19741 + ... + 23098.

It is an arithmetic number, because the mean of its divisors is an integer number (9510480).

Almost surely, 2^71926681 is an apocalyptic number.

It is an amenable number.

71926681 is a deficient number, since it is larger than the sum of its proper divisors (4157159).

71926681 is a wasteful number, since it uses less digits than its factorization.

71926681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42935.

The product of its digits is 36288, while the sum is 40.

The square root of 71926681 is about 8480.9599102932. The cubic root of 71926681 is about 415.8755039965.

The spelling of 71926681 in words is "seventy-one million, nine hundred twenty-six thousand, six hundred eighty-one".