85508671 has 2 divisors, whose sum is σ = 85508672. Its totient is φ = 85508670.

The previous prime is 85508627. The next prime is 85508677. The reversal of 85508671 is 17680558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85508671 - 2²¹ = 83411519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85508677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42754335 + 42754336.

It is an arithmetic number, because the mean of its divisors is an integer number (42754336).

Almost surely, 2^85508671 is an apocalyptic number.

85508671 is a deficient number, since it is larger than the sum of its proper divisors (1).

85508671 is an equidigital number, since it uses as much as digits as its factorization.

85508671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 85508671 is about 9247.0898665472. The cubic root of 85508671 is about 440.5582978420.

The spelling of 85508671 in words is "eighty-five million, five hundred eight thousand, six hundred seventy-one".