1660812 has 12 divisors (see below), whose sum is σ = 3875256. Its totient is φ = 553600.

The previous prime is 1660793. The next prime is 1660837. The reversal of 1660812 is 2180661.

It is a tau number, because it is divible by the number of its divisors (12).

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

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 3 ways as a sum of consecutive naturals, for example, 69189 + ... + 69212.

It is an arithmetic number, because the mean of its divisors is an integer number (322938).

2^1660812 is an apocalyptic number.

1660812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1660812 is an abundant number, since it is smaller than the sum of its proper divisors (2214444).

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

1660812 is a wasteful number, since it uses less digits than its factorization.

1660812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138408 (or 138406 counting only the distinct ones).

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

The square root of 1660812 is about 1288.7249512600. The cubic root of 1660812 is about 118.4241177738.

The spelling of 1660812 in words is "one million, six hundred sixty thousand, eight hundred twelve".