85130806 has 4 divisors (see below), whose sum is σ = 127696212. Its totient is φ = 42565402.

The previous prime is 85130777. The next prime is 85130809. The reversal of 85130806 is 60803158.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85130809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21282700 + ... + 21282703.

It is an arithmetic number, because the mean of its divisors is an integer number (31924053).

Almost surely, 2^85130806 is an apocalyptic number.

85130806 is a deficient number, since it is larger than the sum of its proper divisors (42565406).

85130806 is a wasteful number, since it uses less digits than its factorization.

85130806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42565405.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 85130806 is about 9226.6356815472. The cubic root of 85130806 is about 439.9083934636.

The spelling of 85130806 in words is "eighty-five million, one hundred thirty thousand, eight hundred six".