812470845 has 16 divisors (see below), whose sum is σ = 1302460992. Its totient is φ = 432481920.

The previous prime is 812470843. The next prime is 812470861. The reversal of 812470845 is 548074218.

It is a happy number.

812470845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 812470845 - 2¹ = 812470843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812470843) 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, 44167 + ... + 59796.

It is an arithmetic number, because the mean of its divisors is an integer number (81403812).

Almost surely, 2^812470845 is an apocalyptic number.

It is an amenable number.

812470845 is a deficient number, since it is larger than the sum of its proper divisors (489990147).

812470845 is a wasteful number, since it uses less digits than its factorization.

812470845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104492.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 812470845 is about 28503.8742103595. The cubic root of 812470845 is about 933.1166279054.

The spelling of 812470845 in words is "eight hundred twelve million, four hundred seventy thousand, eight hundred forty-five".