86128807 has 2 divisors, whose sum is σ = 86128808. Its totient is φ = 86128806.

The previous prime is 86128793. The next prime is 86128829. The reversal of 86128807 is 70882168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86128807 - 2¹¹ = 86126759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86128807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86128877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43064403 + 43064404.

It is an arithmetic number, because the mean of its divisors is an integer number (43064404).

Almost surely, 2^86128807 is an apocalyptic number.

86128807 is a deficient number, since it is larger than the sum of its proper divisors (1).

86128807 is an equidigital number, since it uses as much as digits as its factorization.

86128807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 86128807 is about 9280.5607050436. The cubic root of 86128807 is about 441.6207563687.

The spelling of 86128807 in words is "eighty-six million, one hundred twenty-eight thousand, eight hundred seven".