86437543 has 2 divisors, whose sum is σ = 86437544. Its totient is φ = 86437542.

The previous prime is 86437531. The next prime is 86437577. The reversal of 86437543 is 34573468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86437543 - 2⁹ = 86437031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86437496 and 86437505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86437583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43218771 + 43218772.

It is an arithmetic number, because the mean of its divisors is an integer number (43218772).

Almost surely, 2^86437543 is an apocalyptic number.

86437543 is a deficient number, since it is larger than the sum of its proper divisors (1).

86437543 is an equidigital number, since it uses as much as digits as its factorization.

86437543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 40.

The square root of 86437543 is about 9297.1793034232. The cubic root of 86437543 is about 442.1478027842.

The spelling of 86437543 in words is "eighty-six million, four hundred thirty-seven thousand, five hundred forty-three".