812478692 has 12 divisors (see below), whose sum is σ = 1426059180. Its totient is φ = 405033216.

The previous prime is 812478691. The next prime is 812478727. The reversal of 812478692 is 296874218.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219750976 + 592727716 = 14824^2 + 24346^2 .

It is not an unprimeable number, because it can be changed into a prime (812478691) 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, 300017 + ... + 302712.

It is an arithmetic number, because the mean of its divisors is an integer number (118838265).

Almost surely, 2^812478692 is an apocalyptic number.

It is an amenable number.

812478692 is a deficient number, since it is larger than the sum of its proper divisors (613580488).

812478692 is a wasteful number, since it uses less digits than its factorization.

812478692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603070 (or 603068 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 812478692 is about 28504.0118579824. The cubic root of 812478692 is about 933.1196319691.

The spelling of 812478692 in words is "eight hundred twelve million, four hundred seventy-eight thousand, six hundred ninety-two".