1681026 has 16 divisors (see below), whose sum is σ = 3374784. Its totient is φ = 558224.

The previous prime is 1681007. The next prime is 1681027. The reversal of 1681026 is 6201861.

It is a junction number, because it is equal to n+sod(n) for n = 1680987 and 1681005.

It is not an unprimeable number, because it can be changed into a prime (1681027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2740 + ... + 3296.

It is an arithmetic number, because the mean of its divisors is an integer number (210924).

2^1681026 is an apocalyptic number.

1681026 is an abundant number, since it is smaller than the sum of its proper divisors (1693758).

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

1681026 is a wasteful number, since it uses less digits than its factorization.

1681026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1681026 is about 1296.5438673643. The cubic root of 1681026 is about 118.9026343841.

Adding to 1681026 its reverse (6201861), we get a palindrome (7882887).

It can be divided in two parts, 16810 and 26, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 1681026 in words is "one million, six hundred eighty-one thousand, twenty-six".