260663505 has 16 divisors (see below), whose sum is σ = 419183424. Its totient is φ = 138313280.

The previous prime is 260663477. The next prime is 260663521. The reversal of 260663505 is 505366062.

260663505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 260663505 - 2⁹ = 260662993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41151 + ... + 47060.

It is an arithmetic number, because the mean of its divisors is an integer number (26198964).

Almost surely, 2^260663505 is an apocalyptic number.

It is an amenable number.

260663505 is a deficient number, since it is larger than the sum of its proper divisors (158519919).

260663505 is a wasteful number, since it uses less digits than its factorization.

260663505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88416.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 260663505 is about 16145.0768037814. The cubic root of 260663505 is about 638.7928947926.

The spelling of 260663505 in words is "two hundred sixty million, six hundred sixty-three thousand, five hundred five".