812656834 has 8 divisors (see below), whose sum is σ = 1329802128. Its totient is φ = 369389460.

The previous prime is 812656813. The next prime is 812656843. The reversal of 812656834 is 438656218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×812656834² = 1320822259693807112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18469452 + ... + 18469495.

It is an arithmetic number, because the mean of its divisors is an integer number (166225266).

Almost surely, 2^812656834 is an apocalyptic number.

812656834 is a deficient number, since it is larger than the sum of its proper divisors (517145294).

812656834 is a wasteful number, since it uses less digits than its factorization.

812656834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36938960.

The product of its digits is 276480, while the sum is 43.

The square root of 812656834 is about 28507.1365450829. The cubic root of 812656834 is about 933.1878247934.

The spelling of 812656834 in words is "eight hundred twelve million, six hundred fifty-six thousand, eight hundred thirty-four".