2626660 has 24 divisors (see below), whose sum is σ = 5609016. Its totient is φ = 1032960.

The previous prime is 2626649. The next prime is 2626691. The reversal of 2626660 is 666262.

It can be written as a sum of positive squares in 4 ways, for example, as 142884 + 2483776 = 378^2 + 1576^2 .

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 7 ways as a sum of consecutive naturals, for example, 144 + ... + 2296.

It is an arithmetic number, because the mean of its divisors is an integer number (233709).

2^2626660 is an apocalyptic number.

2626660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2626660 is an abundant number, since it is smaller than the sum of its proper divisors (2982356).

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

2626660 is a wasteful number, since it uses less digits than its factorization.

2626660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2626660 is about 1620.6973807593. The cubic root of 2626660 is about 137.9752808767.

The spelling of 2626660 in words is "two million, six hundred twenty-six thousand, six hundred sixty".