1681412 has 6 divisors (see below), whose sum is σ = 2942478. Its totient is φ = 840704.

The previous prime is 1681411. The next prime is 1681423. The reversal of 1681412 is 2141861.

It can be written as a sum of positive squares in only one way, i.e., 948676 + 732736 = 974^2 + 856^2 .

It is not an unprimeable number, because it can be changed into a prime (1681411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210173 + ... + 210180.

It is an arithmetic number, because the mean of its divisors is an integer number (490413).

2^1681412 is an apocalyptic number.

It is an amenable number.

1681412 is a deficient number, since it is larger than the sum of its proper divisors (1261066).

1681412 is a wasteful number, since it uses less digits than its factorization.

1681412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420357 (or 420355 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

The square root of 1681412 is about 1296.6927161051. The cubic root of 1681412 is about 118.9117345615.

The spelling of 1681412 in words is "one million, six hundred eighty-one thousand, four hundred twelve".