85317653 has 4 divisors (see below), whose sum is σ = 85338060. Its totient is φ = 85297248.

The previous prime is 85317641. The next prime is 85317667. The reversal of 85317653 is 35671358.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13712209 + 71605444 = 3703^2 + 8462^2 .

It is a cyclic number.

It is not a de Polignac number, because 85317653 - 2¹⁶ = 85252117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85317613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400 + ... + 13137.

It is an arithmetic number, because the mean of its divisors is an integer number (21334515).

Almost surely, 2^85317653 is an apocalyptic number.

It is an amenable number.

85317653 is a deficient number, since it is larger than the sum of its proper divisors (20407).

85317653 is a wasteful number, since it uses less digits than its factorization.

85317653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20406.

The product of its digits is 75600, while the sum is 38.

The square root of 85317653 is about 9236.7555451035. The cubic root of 85317653 is about 440.2299985549.

The spelling of 85317653 in words is "eighty-five million, three hundred seventeen thousand, six hundred fifty-three".