85388663 has 4 divisors (see below), whose sum is σ = 88143168. Its totient is φ = 82634160.

The previous prime is 85388659. The next prime is 85388683. The reversal of 85388663 is 36688358.

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 85388663 - 2² = 85388659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85388683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377206 + ... + 1377267.

It is an arithmetic number, because the mean of its divisors is an integer number (22035792).

Almost surely, 2^85388663 is an apocalyptic number.

85388663 is a deficient number, since it is larger than the sum of its proper divisors (2754505).

85388663 is a wasteful number, since it uses less digits than its factorization.

85388663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754504.

The product of its digits is 829440, while the sum is 47.

The square root of 85388663 is about 9240.5986277946. The cubic root of 85388663 is about 440.3520993642.

The spelling of 85388663 in words is "eighty-five million, three hundred eighty-eight thousand, six hundred sixty-three".