816011 has 8 divisors (see below), whose sum is σ = 954624. Its totient is φ = 682920.

The previous prime is 815989. The next prime is 816019. The reversal of 816011 is 110618.

It is a happy number.

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

It is not a de Polignac number, because 816011 - 2¹⁸ = 553867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816019) 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, 1055 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (119328).

2⁸¹⁶⁰¹¹ is an apocalyptic number.

816011 is a deficient number, since it is larger than the sum of its proper divisors (138613).

816011 is a wasteful number, since it uses less digits than its factorization.

816011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 816011 is about 903.3332718327. Note that the first 3 decimals coincide. The cubic root of 816011 is about 93.4469944640.

Adding to 816011 its reverse (110618), we get a palindrome (926629).

The spelling of 816011 in words is "eight hundred sixteen thousand, eleven".