812412697 has 4 divisors (see below), whose sum is σ = 855171280. Its totient is φ = 769654116.

The previous prime is 812412661. The next prime is 812412703. The reversal of 812412697 is 796214218.

812412697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812412697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812412607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21379263 + ... + 21379300.

It is an arithmetic number, because the mean of its divisors is an integer number (213792820).

Almost surely, 2^812412697 is an apocalyptic number.

It is an amenable number.

812412697 is a deficient number, since it is larger than the sum of its proper divisors (42758583).

812412697 is a wasteful number, since it uses less digits than its factorization.

812412697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42758582.

The product of its digits is 48384, while the sum is 40.

The square root of 812412697 is about 28502.8541904140. The cubic root of 812412697 is about 933.0943665281.

It can be divided in two parts, 81241 and 2697, that added together give a palindrome (83938).

The spelling of 812412697 in words is "eight hundred twelve million, four hundred twelve thousand, six hundred ninety-seven".