812397684 has 24 divisors (see below), whose sum is σ = 2166394048. Its totient is φ = 232113600.

The previous prime is 812397671. The next prime is 812397689. The reversal of 812397684 is 486793218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812397689) 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 7 ways as a sum of consecutive naturals, for example, 4835617 + ... + 4835784.

Almost surely, 2^812397684 is an apocalyptic number.

812397684 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

812397684 is an abundant number, since it is smaller than the sum of its proper divisors (1353996364).

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

812397684 is a wasteful number, since it uses less digits than its factorization.

812397684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671415 (or 9671413 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 812397684 is about 28502.5908296071. The cubic root of 812397684 is about 933.0886187794.

The spelling of 812397684 in words is "eight hundred twelve million, three hundred ninety-seven thousand, six hundred eighty-four".