86751689 has 2 divisors, whose sum is σ = 86751690. Its totient is φ = 86751688.

The previous prime is 86751661. The next prime is 86751713. The reversal of 86751689 is 98615768.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86174089 + 577600 = 9283^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 86751689 - 2¹² = 86747593 is a prime.

It is not a weakly prime, because it can be changed into another prime (86751389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43375844 + 43375845.

It is an arithmetic number, because the mean of its divisors is an integer number (43375845).

Almost surely, 2^86751689 is an apocalyptic number.

It is an amenable number.

86751689 is a deficient number, since it is larger than the sum of its proper divisors (1).

86751689 is an equidigital number, since it uses as much as digits as its factorization.

86751689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 86751689 is about 9314.0586749279. The cubic root of 86751689 is about 442.6827980641.

The spelling of 86751689 in words is "eighty-six million, seven hundred fifty-one thousand, six hundred eighty-nine".