87315727 has 2 divisors, whose sum is σ = 87315728. Its totient is φ = 87315726.

The previous prime is 87315721. The next prime is 87315733. The reversal of 87315727 is 72751378.

It is a balanced prime because it is at equal distance from previous prime (87315721) and next prime (87315733).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87315727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87315727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87315721) 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, 43657863 + 43657864.

It is an arithmetic number, because the mean of its divisors is an integer number (43657864).

Almost surely, 2^87315727 is an apocalyptic number.

87315727 is a deficient number, since it is larger than the sum of its proper divisors (1).

87315727 is an equidigital number, since it uses as much as digits as its factorization.

87315727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 87315727 is about 9344.2884694341. The cubic root of 87315727 is about 443.6401309163.

The spelling of 87315727 in words is "eighty-seven million, three hundred fifteen thousand, seven hundred twenty-seven".