1681676 has 6 divisors (see below), whose sum is σ = 2942940. Its totient is φ = 840836.

The previous prime is 1681661. The next prime is 1681679. The reversal of 1681676 is 6761861.

It is not an unprimeable number, because it can be changed into a prime (1681679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210206 + ... + 210213.

It is an arithmetic number, because the mean of its divisors is an integer number (490490).

2^1681676 is an apocalyptic number.

It is an amenable number.

1681676 is a deficient number, since it is larger than the sum of its proper divisors (1261264).

1681676 is a wasteful number, since it uses less digits than its factorization.

1681676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420423 (or 420421 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 1681676 is about 1296.7945095504. The cubic root of 1681676 is about 118.9179577150.

It can be divided in two parts, 1681 and 676, that multiplied together give a square (1136356 = 1066²).

The spelling of 1681676 in words is "one million, six hundred eighty-one thousand, six hundred seventy-six".