85906605 has 16 divisors (see below), whose sum is σ = 139705344. Its totient is φ = 45065280.

The previous prime is 85906591. The next prime is 85906607. The reversal of 85906605 is 50660958.

It is not a de Polignac number, because 85906605 - 2⁴ = 85906589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85906607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46029 + ... + 47858.

It is an arithmetic number, because the mean of its divisors is an integer number (8731584).

Almost surely, 2^85906605 is an apocalyptic number.

It is an amenable number.

85906605 is a deficient number, since it is larger than the sum of its proper divisors (53798739).

85906605 is a wasteful number, since it uses less digits than its factorization.

85906605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93956.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 85906605 is about 9268.5816066969. The cubic root of 85906605 is about 441.2406530989.

The spelling of 85906605 in words is "eighty-five million, nine hundred six thousand, six hundred five".