2561746 has 8 divisors (see below), whose sum is σ = 4191984. Its totient is φ = 1164420.

The previous prime is 2561743. The next prime is 2561749. The reversal of 2561746 is 6471652.

It is a happy number.

2561746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2561743) and next prime (2561749).

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

It is not an unprimeable number, because it can be changed into a prime (2561743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58200 + ... + 58243.

It is an arithmetic number, because the mean of its divisors is an integer number (523998).

2^2561746 is an apocalyptic number.

2561746 is a deficient number, since it is larger than the sum of its proper divisors (1630238).

2561746 is a wasteful number, since it uses less digits than its factorization.

2561746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116456.

The product of its digits is 10080, while the sum is 31.

The square root of 2561746 is about 1600.5455319984. The cubic root of 2561746 is about 136.8291688539.

It can be divided in two parts, 256 and 1746, that added together give a palindrome (2002).

The spelling of 2561746 in words is "two million, five hundred sixty-one thousand, seven hundred forty-six".