82728697 has 2 divisors, whose sum is σ = 82728698. Its totient is φ = 82728696.

The previous prime is 82728691. The next prime is 82728713. The reversal of 82728697 is 79682728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41525136 + 41203561 = 6444^2 + 6419^2 .

It is a cyclic number.

It is not a de Polignac number, because 82728697 - 2¹¹ = 82726649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82728697.

It is not a weakly prime, because it can be changed into another prime (82728691) 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 as a sum of consecutive naturals, namely, 41364348 + 41364349.

It is an arithmetic number, because the mean of its divisors is an integer number (41364349).

Almost surely, 2^82728697 is an apocalyptic number.

It is an amenable number.

82728697 is a deficient number, since it is larger than the sum of its proper divisors (1).

82728697 is an equidigital number, since it uses as much as digits as its factorization.

82728697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 49.

The square root of 82728697 is about 9095.5317051836. The cubic root of 82728697 is about 435.7312700972.

The spelling of 82728697 in words is "eighty-two million, seven hundred twenty-eight thousand, six hundred ninety-seven".