1666160 has 40 divisors (see below), whose sum is σ = 3950640. Its totient is φ = 653312.

The previous prime is 1666151. The next prime is 1666177. The reversal of 1666160 is 616661.

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

It is a congruent number.

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, 4544 + ... + 4896.

It is an arithmetic number, because the mean of its divisors is an integer number (98766).

2^1666160 is an apocalyptic number.

1666160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1666160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975320).

1666160 is an abundant number, since it is smaller than the sum of its proper divisors (2284480).

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

1666160 is a wasteful number, since it uses less digits than its factorization.

1666160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1666160 is about 1290.7982026638. The cubic root of 1666160 is about 118.5510945368.

The spelling of 1666160 in words is "one million, six hundred sixty-six thousand, one hundred sixty".