2556608 has 28 divisors (see below), whose sum is σ = 5196840. Its totient is φ = 1247232.

The previous prime is 2556607. The next prime is 2556641. The reversal of 2556608 is 8066552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (2556607) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2288 + ... + 3216.

2^2556608 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 2556608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598420).

2556608 is an abundant number, since it is smaller than the sum of its proper divisors (2640232).

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

2556608 is an equidigital number, since it uses as much as digits as its factorization.

2556608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2556608 is about 1598.9396486422. The cubic root of 2556608 is about 136.7376298792.

The spelling of 2556608 in words is "two million, five hundred fifty-six thousand, six hundred eight".