816213068 has 12 divisors (see below), whose sum is σ = 1558225032. Its totient is φ = 371005920.

The previous prime is 816213059. The next prime is 816213107. The reversal of 816213068 is 860312618.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9275105 + ... + 9275192.

It is an arithmetic number, because the mean of its divisors is an integer number (129852086).

Almost surely, 2^816213068 is an apocalyptic number.

It is an amenable number.

816213068 is a deficient number, since it is larger than the sum of its proper divisors (742011964).

816213068 is a wasteful number, since it uses less digits than its factorization.

816213068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18550312 (or 18550310 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 816213068 is about 28569.4429067142. The cubic root of 816213068 is about 934.5470722317.

The spelling of 816213068 in words is "eight hundred sixteen million, two hundred thirteen thousand, sixty-eight".