85906805 has 16 divisors (see below), whose sum is σ = 105753600. Its totient is φ = 66971520.

The previous prime is 85906801. The next prime is 85906811. The reversal of 85906805 is 50860958.

It is not a de Polignac number, because 85906805 - 2² = 85906801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85906801) 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, 30236 + ... + 32954.

It is an arithmetic number, because the mean of its divisors is an integer number (6609600).

Almost surely, 2^85906805 is an apocalyptic number.

It is an amenable number.

85906805 is a deficient number, since it is larger than the sum of its proper divisors (19846795).

85906805 is a wasteful number, since it uses less digits than its factorization.

85906805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 85906805 is about 9268.5923958280. The cubic root of 85906805 is about 441.2409955175.

The spelling of 85906805 in words is "eighty-five million, nine hundred six thousand, eight hundred five".