85708507 has 4 divisors (see below), whose sum is σ = 86067360. Its totient is φ = 85349656.

The previous prime is 85708501. The next prime is 85708523. The reversal of 85708507 is 70580758.

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

It is a cyclic number.

It is not a de Polignac number, because 85708507 - 2⁷ = 85708379 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85708507.

It is not an unprimeable number, because it can be changed into a prime (85708501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179068 + ... + 179545.

It is an arithmetic number, because the mean of its divisors is an integer number (21516840).

Almost surely, 2^85708507 is an apocalyptic number.

85708507 is a deficient number, since it is larger than the sum of its proper divisors (358853).

85708507 is a wasteful number, since it uses less digits than its factorization.

85708507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358852.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 85708507 is about 9257.8889062248. Note that the first 3 decimals coincide. The cubic root of 85708507 is about 440.9012295877.

The spelling of 85708507 in words is "eighty-five million, seven hundred eight thousand, five hundred seven".