85807806 has 64 divisors (see below), whose sum is σ = 212170752. Its totient is φ = 22574592.

The previous prime is 85807769. The next prime is 85807817. The reversal of 85807806 is 60870858.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32280 + ... + 34836.

It is an arithmetic number, because the mean of its divisors is an integer number (3315168).

Almost surely, 2^85807806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85807806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106085376).

85807806 is an abundant number, since it is smaller than the sum of its proper divisors (126362946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85807806 is a wasteful number, since it uses less digits than its factorization.

85807806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 85807806 is about 9263.2502934985. The cubic root of 85807806 is about 441.0714349961.

The spelling of 85807806 in words is "eighty-five million, eight hundred seven thousand, eight hundred six".