87316793 has 2 divisors, whose sum is σ = 87316794. Its totient is φ = 87316792.

The previous prime is 87316783. The next prime is 87316819. The reversal of 87316793 is 39761378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83960569 + 3356224 = 9163^2 + 1832^2 .

It is a cyclic number.

It is not a de Polignac number, because 87316793 - 2⁶ = 87316729 is a prime.

It is not a weakly prime, because it can be changed into another prime (87316783) 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, 43658396 + 43658397.

It is an arithmetic number, because the mean of its divisors is an integer number (43658397).

Almost surely, 2^87316793 is an apocalyptic number.

It is an amenable number.

87316793 is a deficient number, since it is larger than the sum of its proper divisors (1).

87316793 is an equidigital number, since it uses as much as digits as its factorization.

87316793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 87316793 is about 9344.3455094512. The cubic root of 87316793 is about 443.6419363125.

The spelling of 87316793 in words is "eighty-seven million, three hundred sixteen thousand, seven hundred ninety-three".