2509684 has 12 divisors (see below), whose sum is σ = 4404708. Its totient is φ = 1251200.

The previous prime is 2509679. The next prime is 2509687. The reversal of 2509684 is 4869052.

It is a happy number.

2509684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 605284 + 1904400 = 778^2 + 1380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509687) 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, 1164 + ... + 2524.

It is an arithmetic number, because the mean of its divisors is an integer number (367059).

2^2509684 is an apocalyptic number.

It is an amenable number.

2509684 is a deficient number, since it is larger than the sum of its proper divisors (1895024).

2509684 is a wasteful number, since it uses less digits than its factorization.

2509684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2509684 is about 1584.1982199207. The cubic root of 2509684 is about 135.8958978433.

The spelling of 2509684 in words is "two million, five hundred nine thousand, six hundred eighty-four".