2556626 has 8 divisors (see below), whose sum is σ = 3938700. Its totient is φ = 1243728.

The previous prime is 2556607. The next prime is 2556641. The reversal of 2556626 is 6266552.

It can be written as a sum of positive squares in 2 ways, for example, as 1918225 + 638401 = 1385^2 + 799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 2556592 and 2556601.

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, 17201 + ... + 17348.

2^2556626 is an apocalyptic number.

2556626 is a deficient number, since it is larger than the sum of its proper divisors (1382074).

2556626 is a wasteful number, since it uses less digits than its factorization.

2556626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34588.

The product of its digits is 21600, while the sum is 32.

The square root of 2556626 is about 1598.9452773625. The cubic root of 2556626 is about 136.7379507825.

The spelling of 2556626 in words is "two million, five hundred fifty-six thousand, six hundred twenty-six".