71922681 has 8 divisors (see below), whose sum is σ = 106552160. Its totient is φ = 47948436.

The previous prime is 71922667. The next prime is 71922701. The reversal of 71922681 is 18622917.

It is not a de Polignac number, because 71922681 - 2⁷ = 71922553 is a prime.

It is a super-2 number, since 2×71922681² = 10345744084455522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71922281) 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, 1331875 + ... + 1331928.

It is an arithmetic number, because the mean of its divisors is an integer number (13319020).

Almost surely, 2^71922681 is an apocalyptic number.

It is an amenable number.

71922681 is a deficient number, since it is larger than the sum of its proper divisors (34629479).

71922681 is a wasteful number, since it uses less digits than its factorization.

71922681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663812 (or 2663806 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 71922681 is about 8480.7240846522. The cubic root of 71922681 is about 415.8677946049.

The spelling of 71922681 in words is "seventy-one million, nine hundred twenty-two thousand, six hundred eighty-one".