1681376 has 12 divisors (see below), whose sum is σ = 3310272. Its totient is φ = 840672.

The previous prime is 1681363. The next prime is 1681397. The reversal of 1681376 is 6731861.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 52543 = 1681376 / (1 + 6 + 8 + 1 + 3 + 7 + 6).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26240 + ... + 26303.

It is an arithmetic number, because the mean of its divisors is an integer number (275856).

2^1681376 is an apocalyptic number.

1681376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1681376 is a deficient number, since it is larger than the sum of its proper divisors (1628896).

1681376 is an equidigital number, since it uses as much as digits as its factorization.

1681376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52553 (or 52545 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1681376 is about 1296.6788345616. The cubic root of 1681376 is about 118.9108858992.

The spelling of 1681376 in words is "one million, six hundred eighty-one thousand, three hundred seventy-six".