2556770 has 16 divisors (see below), whose sum is σ = 4632768. Its totient is φ = 1015920.

The previous prime is 2556761. The next prime is 2556791. The reversal of 2556770 is 776552.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905 + ... + 2435.

It is an arithmetic number, because the mean of its divisors is an integer number (289548).

2^2556770 is an apocalyptic number.

2556770 is a deficient number, since it is larger than the sum of its proper divisors (2075998).

2556770 is a wasteful number, since it uses less digits than its factorization.

2556770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 2556770 is about 1598.9903064121. The cubic root of 2556770 is about 136.7405179544.

The spelling of 2556770 in words is "two million, five hundred fifty-six thousand, seven hundred seventy".