1000816 has 20 divisors (see below), whose sum is σ = 1968624. Its totient is φ = 492800.

The previous prime is 1000793. The next prime is 1000829. The reversal of 1000816 is 6180001.

1000816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 1000816.

It is a congruent number.

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, 696 + ... + 1576.

2^1000816 is an apocalyptic number.

1000816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1000816 is a deficient number, since it is larger than the sum of its proper divisors (967808).

1000816 is an equidigital number, since it uses as much as digits as its factorization.

1000816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1000816 is about 1000.4079168019. The cubic root of 1000816 is about 100.0271926050.

Adding to 1000816 its reverse (6180001), we get a palindrome (7180817).

The spelling of 1000816 in words is "one million, eight hundred sixteen", and thus it is an aban number.