2556634 has 8 divisors (see below), whose sum is σ = 4001760. Its totient is φ = 1222716.

The previous prime is 2556607. The next prime is 2556641. The reversal of 2556634 is 4366552.

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

It is a super-3 number, since 3×2556634³ = 50133374169376344312, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2556596 and 2556605.

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, 27744 + ... + 27835.

It is an arithmetic number, because the mean of its divisors is an integer number (500220).

2^2556634 is an apocalyptic number.

2556634 is a deficient number, since it is larger than the sum of its proper divisors (1445126).

2556634 is a wasteful number, since it uses less digits than its factorization.

2556634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55604.

The product of its digits is 21600, while the sum is 31.

The square root of 2556634 is about 1598.9477790097. The cubic root of 2556634 is about 136.7380934057.

It can be divided in two parts, 25566 and 34, that added together give a square (25600 = 160²).

The spelling of 2556634 in words is "two million, five hundred fifty-six thousand, six hundred thirty-four".