816057867 has 8 divisors (see below), whose sum is σ = 1094089360. Its totient is φ = 541032480.

The previous prime is 816057839. The next prime is 816057877. The reversal of 816057867 is 768750618.

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

It is not a de Polignac number, because 816057867 - 2¹¹ = 816055819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816057877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750892 + ... + 751977.

It is an arithmetic number, because the mean of its divisors is an integer number (136761170).

Almost surely, 2^816057867 is an apocalyptic number.

816057867 is a deficient number, since it is larger than the sum of its proper divisors (278031493).

816057867 is a wasteful number, since it uses less digits than its factorization.

816057867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503053.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 816057867 is about 28566.7265713102. The cubic root of 816057867 is about 934.4878344991.

The spelling of 816057867 in words is "eight hundred sixteen million, fifty-seven thousand, eight hundred sixty-seven".