2646688 has 48 divisors (see below), whose sum is σ = 5818176. Its totient is φ = 1175040.

The previous prime is 2646671. The next prime is 2646733. The reversal of 2646688 is 8866462.

It is a self number, because there is not a number n which added to its sum of digits gives 2646688.

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, 25645 + ... + 25747.

It is an arithmetic number, because the mean of its divisors is an integer number (121212).

2^2646688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2909088).

2646688 is an abundant number, since it is smaller than the sum of its proper divisors (3171488).

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

2646688 is a wasteful number, since it uses less digits than its factorization.

2646688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 189 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 2646688 is about 1626.8644688480. The cubic root of 2646688 is about 138.3250755542.

The spelling of 2646688 in words is "two million, six hundred forty-six thousand, six hundred eighty-eight".