1668160 has 56 divisors (see below), whose sum is σ = 4288536. Its totient is φ = 614400.

The previous prime is 1668137. The next prime is 1668197. The reversal of 1668160 is 618661.

It can be written as a sum of positive squares in 4 ways, for example, as 341056 + 1327104 = 584^2 + 1152^2 .

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, 3960 + ... + 4360.

It is an arithmetic number, because the mean of its divisors is an integer number (76581).

2^1668160 is an apocalyptic number.

1668160 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 1668160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2144268).

1668160 is an abundant number, since it is smaller than the sum of its proper divisors (2620376).

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

1668160 is a wasteful number, since it uses less digits than its factorization.

1668160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1668160 is about 1291.5726847530. The cubic root of 1668160 is about 118.5985104278.

The spelling of 1668160 in words is "one million, six hundred sixty-eight thousand, one hundred sixty".