85717145 has 8 divisors (see below), whose sum is σ = 108911304. Its totient is φ = 64539904.

The previous prime is 85717109. The next prime is 85717169. The reversal of 85717145 is 54171758.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4194304 + 81522841 = 2048^2 + 9029^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 85717145 - 2⁶ = 85717081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85717099 and 85717108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504134 + ... + 504303.

It is an arithmetic number, because the mean of its divisors is an integer number (13613913).

Almost surely, 2^85717145 is an apocalyptic number.

85717145 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85717145 is a deficient number, since it is larger than the sum of its proper divisors (23194159).

85717145 is a wasteful number, since it uses less digits than its factorization.

85717145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008459.

The product of its digits is 39200, while the sum is 38.

The square root of 85717145 is about 9258.3554155152. The cubic root of 85717145 is about 440.9160409408.

The spelling of 85717145 in words is "eighty-five million, seven hundred seventeen thousand, one hundred forty-five".