86765089 has 2 divisors, whose sum is σ = 86765090. Its totient is φ = 86765088.

The previous prime is 86765047. The next prime is 86765113. The reversal of 86765089 is 98056768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82664464 + 4100625 = 9092^2 + 2025^2 .

It is a cyclic number.

It is not a de Polignac number, because 86765089 - 2⁹ = 86764577 is a prime.

It is not a weakly prime, because it can be changed into another prime (86765009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43382544 + 43382545.

It is an arithmetic number, because the mean of its divisors is an integer number (43382545).

Almost surely, 2^86765089 is an apocalyptic number.

It is an amenable number.

86765089 is a deficient number, since it is larger than the sum of its proper divisors (1).

86765089 is an equidigital number, since it uses as much as digits as its factorization.

86765089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 86765089 is about 9314.7779898396. Note that the first 3 decimals coincide. The cubic root of 86765089 is about 442.7055897206.

It can be divided in two parts, 867 and 65089, that added together give a palindrome (65956).

The spelling of 86765089 in words is "eighty-six million, seven hundred sixty-five thousand, eighty-nine".