1660080 has 40 divisors (see below), whose sum is σ = 5146992. Its totient is φ = 442624.

The previous prime is 1660073. The next prime is 1660097. The reversal of 1660080 is 800661.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219 + ... + 3698.

2^1660080 is an apocalyptic number.

1660080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660080 is an abundant number, since it is smaller than the sum of its proper divisors (3486912).

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

1660080 is a wasteful number, since it uses less digits than its factorization.

1660080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6933 (or 6927 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1660080 is about 1288.4409183195. The cubic root of 1660080 is about 118.4067168091.

The spelling of 1660080 in words is "one million, six hundred sixty thousand, eighty".