812654233 has 4 divisors (see below), whose sum is σ = 812867508. Its totient is φ = 812440960.

The previous prime is 812654209. The next prime is 812654251. The reversal of 812654233 is 332456218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332456218 = 2 ⋅166228109.

It can be written as a sum of positive squares in 2 ways, for example, as 510172569 + 302481664 = 22587^2 + 17392^2 .

It is a cyclic number.

It is not a de Polignac number, because 812654233 - 2⁵ = 812654201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812654533) 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 3 ways as a sum of consecutive naturals, for example, 100816 + ... + 108577.

It is an arithmetic number, because the mean of its divisors is an integer number (203216877).

Almost surely, 2^812654233 is an apocalyptic number.

It is an amenable number.

812654233 is a deficient number, since it is larger than the sum of its proper divisors (213275).

812654233 is a wasteful number, since it uses less digits than its factorization.

812654233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213274.

The product of its digits is 34560, while the sum is 34.

The square root of 812654233 is about 28507.0909248910. The cubic root of 812654233 is about 933.1868292014.

The spelling of 812654233 in words is "eight hundred twelve million, six hundred fifty-four thousand, two hundred thirty-three".