812664411 has 48 divisors (see below), whose sum is σ = 1240501248. Its totient is φ = 469929600.

The previous prime is 812664383. The next prime is 812664421. The reversal of 812664411 is 114466218.

It is not a de Polignac number, because 812664411 - 2⁷ = 812664283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (812664421) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1654876 + ... + 1655366.

It is an arithmetic number, because the mean of its divisors is an integer number (25843776).

Almost surely, 2^812664411 is an apocalyptic number.

812664411 is a deficient number, since it is larger than the sum of its proper divisors (427836837).

812664411 is a wasteful number, since it uses less digits than its factorization.

812664411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 575 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 812664411 is about 28507.2694413197. The cubic root of 812664411 is about 933.1907250509.

The spelling of 812664411 in words is "eight hundred twelve million, six hundred sixty-four thousand, four hundred eleven".