86575789 has 2 divisors, whose sum is σ = 86575790. Its totient is φ = 86575788.

The previous prime is 86575771. The next prime is 86575793. The reversal of 86575789 is 98757568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81757764 + 4818025 = 9042^2 + 2195^2 .

It is a cyclic number.

It is not a de Polignac number, because 86575789 - 2⁷ = 86575661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86570789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43287894 + 43287895.

It is an arithmetic number, because the mean of its divisors is an integer number (43287895).

Almost surely, 2^86575789 is an apocalyptic number.

It is an amenable number.

86575789 is a deficient number, since it is larger than the sum of its proper divisors (1).

86575789 is an equidigital number, since it uses as much as digits as its factorization.

86575789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 55.

The square root of 86575789 is about 9304.6111686626. The cubic root of 86575789 is about 442.3833971977.

The spelling of 86575789 in words is "eighty-six million, five hundred seventy-five thousand, seven hundred eighty-nine".