85518663 has 4 divisors (see below), whose sum is σ = 114024888. Its totient is φ = 57012440.

The previous prime is 85518659. The next prime is 85518679. The reversal of 85518663 is 36681558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85518663 - 2² = 85518659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85518613) 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 in 3 ways as a sum of consecutive naturals, for example, 14253108 + ... + 14253113.

It is an arithmetic number, because the mean of its divisors is an integer number (28506222).

Almost surely, 2^85518663 is an apocalyptic number.

85518663 is a deficient number, since it is larger than the sum of its proper divisors (28506225).

85518663 is a wasteful number, since it uses less digits than its factorization.

85518663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28506224.

The product of its digits is 172800, while the sum is 42.

The square root of 85518663 is about 9247.6301288492. The cubic root of 85518663 is about 440.5754574548.

The spelling of 85518663 in words is "eighty-five million, five hundred eighteen thousand, six hundred sixty-three".