82732681 has 2 divisors, whose sum is σ = 82732682. Its totient is φ = 82732680.

The previous prime is 82732673. The next prime is 82732717. The reversal of 82732681 is 18623728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74235456 + 8497225 = 8616^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 82732681 - 2³ = 82732673 is a prime.

It is a super-2 number, since 2×82732681² = 13689393010895522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82732681.

It is not a weakly prime, because it can be changed into another prime (82732981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41366340 + 41366341.

It is an arithmetic number, because the mean of its divisors is an integer number (41366341).

Almost surely, 2^82732681 is an apocalyptic number.

It is an amenable number.

82732681 is a deficient number, since it is larger than the sum of its proper divisors (1).

82732681 is an equidigital number, since it uses as much as digits as its factorization.

82732681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 82732681 is about 9095.7507111838. The cubic root of 82732681 is about 435.7382645484.

The spelling of 82732681 in words is "eighty-two million, seven hundred thirty-two thousand, six hundred eighty-one".