260664655 has 16 divisors (see below), whose sum is σ = 336817440. Its totient is φ = 192934912.

The previous prime is 260664641. The next prime is 260664659. The reversal of 260664655 is 556466062.

It is a cyclic number.

It is not a de Polignac number, because 260664655 - 2¹¹ = 260662607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260664659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20974 + ... + 31003.

It is an arithmetic number, because the mean of its divisors is an integer number (21051090).

Almost surely, 2^260664655 is an apocalyptic number.

260664655 is a deficient number, since it is larger than the sum of its proper divisors (76152785).

260664655 is a wasteful number, since it uses less digits than its factorization.

260664655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52058.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 260664655 is about 16145.1124183141. The cubic root of 260664655 is about 638.7938342039.

The spelling of 260664655 in words is "two hundred sixty million, six hundred sixty-four thousand, six hundred fifty-five".