81096737 has 2 divisors, whose sum is σ = 81096738. Its totient is φ = 81096736.

The previous prime is 81096721. The next prime is 81096767. The reversal of 81096737 is 73769018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76807696 + 4289041 = 8764^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 81096737 - 2⁴ = 81096721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81096694 and 81096703.

It is not a weakly prime, because it can be changed into another prime (81096767) 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 as a sum of consecutive naturals, namely, 40548368 + 40548369.

It is an arithmetic number, because the mean of its divisors is an integer number (40548369).

Almost surely, 2^81096737 is an apocalyptic number.

It is an amenable number.

81096737 is a deficient number, since it is larger than the sum of its proper divisors (1).

81096737 is an equidigital number, since it uses as much as digits as its factorization.

81096737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 81096737 is about 9005.3726741318. The cubic root of 81096737 is about 432.8470481191.

The spelling of 81096737 in words is "eighty-one million, ninety-six thousand, seven hundred thirty-seven".