85163729 has 8 divisors (see below), whose sum is σ = 97462080. Its totient is φ = 72898416.

The previous prime is 85163723. The next prime is 85163731. The reversal of 85163729 is 92736158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85163729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85163723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (12182760).

Almost surely, 2^85163729 is an apocalyptic number.

It is an amenable number.

85163729 is a deficient number, since it is larger than the sum of its proper divisors (12298351).

85163729 is a wasteful number, since it uses less digits than its factorization.

85163729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16519.

The product of its digits is 90720, while the sum is 41.

The square root of 85163729 is about 9228.4196371860. The cubic root of 85163729 is about 439.9650953716.

The spelling of 85163729 in words is "eighty-five million, one hundred sixty-three thousand, seven hundred twenty-nine".