1682816 has 16 divisors (see below), whose sum is σ = 3352740. Its totient is φ = 841344.

The previous prime is 1682809. The next prime is 1682827. The reversal of 1682816 is 6182861.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6446 + ... + 6701.

2^1682816 is an apocalyptic number.

1682816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1682816 is a deficient number, since it is larger than the sum of its proper divisors (1669924).

1682816 is an equidigital number, since it uses as much as digits as its factorization.

1682816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13161 (or 13149 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 1682816 is about 1297.2339804368. The cubic root of 1682816 is about 118.9448229475.

The spelling of 1682816 in words is "one million, six hundred eighty-two thousand, eight hundred sixteen".