86622589 has 2 divisors, whose sum is σ = 86622590. Its totient is φ = 86622588.

The previous prime is 86622583. The next prime is 86622611. The reversal of 86622589 is 98522668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85710564 + 912025 = 9258^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 86622589 - 2⁹ = 86622077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86622583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43311294 + 43311295.

It is an arithmetic number, because the mean of its divisors is an integer number (43311295).

Almost surely, 2^86622589 is an apocalyptic number.

It is an amenable number.

86622589 is a deficient number, since it is larger than the sum of its proper divisors (1).

86622589 is an equidigital number, since it uses as much as digits as its factorization.

86622589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 86622589 is about 9307.1257109808. The cubic root of 86622589 is about 442.4630954359.

The spelling of 86622589 in words is "eighty-six million, six hundred twenty-two thousand, five hundred eighty-nine".