2560663609 has 9 divisors (see below), whose sum is σ = 2979143247. Its totient is φ = 2194550904.

The previous prime is 2560663583. The next prime is 2560663619. The reversal of 2560663609 is 9063660652.

It is a happy number.

The square root of 2560663609 is 50603.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2554999209 + 5664400 = 50547^2 + 2380^2 .

It is not a de Polignac number, because 2560663609 - 2⁷ = 2560663481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2560663619) 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 8 ways as a sum of consecutive naturals, for example, 350607 + ... + 357835.

Almost surely, 2^2560663609 is an apocalyptic number.

2560663609 is the 50603-rd square number.

2560663609 is the 25302-nd centered octagonal number.

It is an amenable number.

2560663609 is a deficient number, since it is larger than the sum of its proper divisors (418479638).

2560663609 is an frugal number, since it uses more digits than its factorization.

2560663609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14472 (or 7236 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 43.

The cubic root of 2560663609 is about 1368.0989508196.

The spelling of 2560663609 in words is "two billion, five hundred sixty million, six hundred sixty-three thousand, six hundred nine".