86545687 has 2 divisors, whose sum is σ = 86545688. Its totient is φ = 86545686.

The previous prime is 86545651. The next prime is 86545717. The reversal of 86545687 is 78654568.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86545687 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86545687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86545637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43272843 + 43272844.

It is an arithmetic number, because the mean of its divisors is an integer number (43272844).

Almost surely, 2^86545687 is an apocalyptic number.

86545687 is a deficient number, since it is larger than the sum of its proper divisors (1).

86545687 is an equidigital number, since it uses as much as digits as its factorization.

86545687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 49.

The square root of 86545687 is about 9302.9934429731. The cubic root of 86545687 is about 442.3321197029.

It can be divided in two parts, 8654 and 5687, that added together give a palindrome (14341).

The spelling of 86545687 in words is "eighty-six million, five hundred forty-five thousand, six hundred eighty-seven".