812560916 has 12 divisors (see below), whose sum is σ = 1496822880. Its totient is φ = 384897240.

The previous prime is 812560909. The next prime is 812560937. The reversal of 812560916 is 619065218.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 812560916.

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 3 ways as a sum of consecutive naturals, for example, 5345720 + ... + 5345871.

It is an arithmetic number, because the mean of its divisors is an integer number (124735240).

Almost surely, 2^812560916 is an apocalyptic number.

It is an amenable number.

812560916 is a deficient number, since it is larger than the sum of its proper divisors (684261964).

812560916 is a wasteful number, since it uses less digits than its factorization.

812560916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10691614 (or 10691612 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 812560916 is about 28505.4541447773. The cubic root of 812560916 is about 933.1511085856.

The spelling of 812560916 in words is "eight hundred twelve million, five hundred sixty thousand, nine hundred sixteen".