1680894 has 12 divisors (see below), whose sum is σ = 3641976. Its totient is φ = 560292.

The previous prime is 1680893. The next prime is 1680901. The reversal of 1680894 is 4980861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46674 + ... + 46709.

It is an arithmetic number, because the mean of its divisors is an integer number (303498).

2^1680894 is an apocalyptic number.

1680894 is an abundant number, since it is smaller than the sum of its proper divisors (1961082).

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

1680894 is a wasteful number, since it uses less digits than its factorization.

1680894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93391 (or 93388 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1680894 is about 1296.4929618012. The cubic root of 1680894 is about 118.8995220867.

The spelling of 1680894 in words is "one million, six hundred eighty thousand, eight hundred ninety-four".