85437663 has 16 divisors (see below), whose sum is σ = 120650496. Its totient is φ = 53665920.

The previous prime is 85437659. The next prime is 85437679. The reversal of 85437663 is 36673458.

It is not a de Polignac number, because 85437663 - 2² = 85437659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85437463) 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 15 ways as a sum of consecutive naturals, for example, 4618 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (7540656).

Almost surely, 2^85437663 is an apocalyptic number.

85437663 is a deficient number, since it is larger than the sum of its proper divisors (35212833).

85437663 is a wasteful number, since it uses less digits than its factorization.

85437663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18574.

The product of its digits is 362880, while the sum is 42.

The square root of 85437663 is about 9243.2495909177. The cubic root of 85437663 is about 440.4363147861.

The spelling of 85437663 in words is "eighty-five million, four hundred thirty-seven thousand, six hundred sixty-three".