85906855 has 4 divisors (see below), whose sum is σ = 103088232. Its totient is φ = 68725480.

The previous prime is 85906823. The next prime is 85906871. The reversal of 85906855 is 55860958.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55860958 = 2 ⋅27930479.

It is not a de Polignac number, because 85906855 - 2⁵ = 85906823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8590681 + ... + 8590690.

It is an arithmetic number, because the mean of its divisors is an integer number (25772058).

Almost surely, 2^85906855 is an apocalyptic number.

85906855 is a deficient number, since it is larger than the sum of its proper divisors (17181377).

85906855 is a wasteful number, since it uses less digits than its factorization.

85906855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17181376.

The product of its (nonzero) digits is 432000, while the sum is 46.

The square root of 85906855 is about 9268.5950931088. The cubic root of 85906855 is about 441.2410811220.

The spelling of 85906855 in words is "eighty-five million, nine hundred six thousand, eight hundred fifty-five".