812667012 has 48 divisors (see below), whose sum is σ = 2010671040. Its totient is φ = 254748672.

The previous prime is 812666999. The next prime is 812667043. The reversal of 812667012 is 210766218.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18228 + ... + 44244.

It is an arithmetic number, because the mean of its divisors is an integer number (41888980).

Almost surely, 2^812667012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812667012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005335520).

812667012 is an abundant number, since it is smaller than the sum of its proper divisors (1198004028).

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

812667012 is a wasteful number, since it uses less digits than its factorization.

812667012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26180 (or 26178 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 812667012 is about 28507.3150612260. The cubic root of 812667012 is about 933.1917206347.

The spelling of 812667012 in words is "eight hundred twelve million, six hundred sixty-seven thousand, twelve".