2661760 has 32 divisors (see below), whose sum is σ = 6364800. Its totient is φ = 1064448.

The previous prime is 2661739. The next prime is 2661779. The reversal of 2661760 is 671662.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440 + ... + 2719.

It is an arithmetic number, because the mean of its divisors is an integer number (198900).

2^2661760 is an apocalyptic number.

2661760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2661760 is an abundant number, since it is smaller than the sum of its proper divisors (3703040).

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

2661760 is an equidigital number, since it uses as much as digits as its factorization.

2661760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178 (or 4166 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2661760 is about 1631.4901164273. The cubic root of 2661760 is about 138.5871503350.

The spelling of 2661760 in words is "two million, six hundred sixty-one thousand, seven hundred sixty".