1066816 has 28 divisors (see below), whose sum is σ = 2153920. Its totient is φ = 524160.

The previous prime is 1066811. The next prime is 1066817. The reversal of 1066816 is 6186601.

1066816 is nontrivially palindromic in base 15.

It is a super-2 number, since 2×1066816² = 2276192755712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4951 + ... + 5161.

2^1066816 is an apocalyptic number.

1066816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1066816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076960).

1066816 is an abundant number, since it is smaller than the sum of its proper divisors (1087104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066816 is an equidigital number, since it uses as much as digits as its factorization.

1066816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1066816 is about 1032.8678521476. The cubic root of 1066816 is about 102.1793589109.

The spelling of 1066816 in words is "one million, sixty-six thousand, eight hundred sixteen".