71702276681 has 6 divisors (see below), whose sum is σ = 83408770890. Its totient is φ = 61459094256.

The previous prime is 71702276623. The next prime is 71702276689. The reversal of 71702276681 is 18667220717.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43841659456 + 27860617225 = 209384^2 + 166915^2 .

It is not a de Polignac number, because 71702276681 - 2³⁰ = 70628534857 is a prime.

It is a super-2 number, since 2×71702276681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71702276689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 731655836 + ... + 731655933.

It is an arithmetic number, because the mean of its divisors is an integer number (13901461815).

Almost surely, 2^71702276681 is an apocalyptic number.

It is an amenable number.

71702276681 is a deficient number, since it is larger than the sum of its proper divisors (11706494209).

71702276681 is a wasteful number, since it uses less digits than its factorization.

71702276681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463311783 (or 1463311776 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 47.

The spelling of 71702276681 in words is "seventy-one billion, seven hundred two million, two hundred seventy-six thousand, six hundred eighty-one".