85217738 has 8 divisors (see below), whose sum is σ = 127941120. Its totient is φ = 42570700.

The previous prime is 85217731. The next prime is 85217749. The reversal of 85217738 is 83771258.

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

It is a junction number, because it is equal to n+sod(n) for n = 85217695 and 85217704.

It is not an unprimeable number, because it can be changed into a prime (85217731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16208 + ... + 20811.

It is an arithmetic number, because the mean of its divisors is an integer number (15992640).

Almost surely, 2^85217738 is an apocalyptic number.

85217738 is a deficient number, since it is larger than the sum of its proper divisors (42723382).

85217738 is a wasteful number, since it uses less digits than its factorization.

85217738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38172.

The product of its digits is 94080, while the sum is 41.

The square root of 85217738 is about 9231.3454057358. The cubic root of 85217738 is about 440.0580811758.

The spelling of 85217738 in words is "eighty-five million, two hundred seventeen thousand, seven hundred thirty-eight".