812566612 has 48 divisors (see below), whose sum is σ = 1768882752. Its totient is φ = 320878080.

The previous prime is 812566589. The next prime is 812566633. The reversal of 812566612 is 216665218.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32058 + ... + 51505.

It is an arithmetic number, because the mean of its divisors is an integer number (36851724).

Almost surely, 2^812566612 is an apocalyptic number.

It is an amenable number.

812566612 is an abundant number, since it is smaller than the sum of its proper divisors (956316140).

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

812566612 is a wasteful number, since it uses less digits than its factorization.

812566612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83608 (or 83606 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 812566612 is about 28505.5540553065. The cubic root of 812566612 is about 933.1532890237.

The spelling of 812566612 in words is "eight hundred twelve million, five hundred sixty-six thousand, six hundred twelve".