81726083 has 2 divisors, whose sum is σ = 81726084. Its totient is φ = 81726082.

The previous prime is 81726037. The next prime is 81726103. The reversal of 81726083 is 38062718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81726083 - 2⁶ = 81726019 is a prime.

It is not a weakly prime, because it can be changed into another prime (81726683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40863041 + 40863042.

It is an arithmetic number, because the mean of its divisors is an integer number (40863042).

Almost surely, 2^81726083 is an apocalyptic number.

81726083 is a deficient number, since it is larger than the sum of its proper divisors (1).

81726083 is an equidigital number, since it uses as much as digits as its factorization.

81726083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 81726083 is about 9040.2479501394. The cubic root of 81726083 is about 433.9638579769.

The spelling of 81726083 in words is "eighty-one million, seven hundred twenty-six thousand, eighty-three".