816212833 has 8 divisors (see below), whose sum is σ = 822813696. Its totient is φ = 809628000.

The previous prime is 816212821. The next prime is 816212843. The reversal of 816212833 is 338212618.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 816212833 - 2⁹ = 816212321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816212843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111360 + ... + 118462.

It is an arithmetic number, because the mean of its divisors is an integer number (102851712).

Almost surely, 2^816212833 is an apocalyptic number.

It is an amenable number.

816212833 is a deficient number, since it is larger than the sum of its proper divisors (6600863).

816212833 is a wasteful number, since it uses less digits than its factorization.

816212833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8015.

The product of its digits is 13824, while the sum is 34.

The square root of 816212833 is about 28569.4387939280. The cubic root of 816212833 is about 934.5469825416.

The spelling of 816212833 in words is "eight hundred sixteen million, two hundred twelve thousand, eight hundred thirty-three".