1681080 has 32 divisors (see below), whose sum is σ = 5043600. Its totient is φ = 448256.

The previous prime is 1681073. The next prime is 1681091. The reversal of 1681080 is 801861.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1681080.

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 in 7 ways as a sum of consecutive naturals, for example, 6885 + ... + 7124.

2^1681080 is an apocalyptic number.

1681080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1681080 is an abundant number, since it is smaller than the sum of its proper divisors (3362520).

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

1681080 is a wasteful number, since it uses less digits than its factorization.

1681080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14023 (or 14019 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1681080 is about 1296.5646917914. The cubic root of 1681080 is about 118.9039075497.

The spelling of 1681080 in words is "one million, six hundred eighty-one thousand, eighty".