85240873 has 4 divisors (see below), whose sum is σ = 90255060. Its totient is φ = 80226688.

The previous prime is 85240871. The next prime is 85240877. The reversal of 85240873 is 37804258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37804258 = 2 ⋅18902129.

It can be written as a sum of positive squares in 2 ways, for example, as 78287104 + 6953769 = 8848^2 + 2637^2 .

It is a cyclic number.

It is not a de Polignac number, because 85240873 - 2¹ = 85240871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85240871) 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, 2507068 + ... + 2507101.

It is an arithmetic number, because the mean of its divisors is an integer number (22563765).

Almost surely, 2^85240873 is an apocalyptic number.

It is an amenable number.

85240873 is a deficient number, since it is larger than the sum of its proper divisors (5014187).

85240873 is a wasteful number, since it uses less digits than its factorization.

85240873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014186.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 85240873 is about 9232.5983883195. The cubic root of 85240873 is about 440.0979000476.

The spelling of 85240873 in words is "eighty-five million, two hundred forty thousand, eight hundred seventy-three".