2660544 has 84 divisors (see below), whose sum is σ = 7924800. Its totient is φ = 852480.

The previous prime is 2660533. The next prime is 2660557. The reversal of 2660544 is 4450662.

It is a happy number.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17782 + ... + 17930.

2^2660544 is an apocalyptic number.

2660544 is a gapful number since it is divisible by the number (24) 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 2660544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3962400).

2660544 is an abundant number, since it is smaller than the sum of its proper divisors (5264256).

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

2660544 is a wasteful number, since it uses less digits than its factorization.

2660544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2660544 is about 1631.1174084044. The cubic root of 2660544 is about 138.5660430421.

The spelling of 2660544 in words is "two million, six hundred sixty thousand, five hundred forty-four".