260808261 has 16 divisors (see below), whose sum is σ = 404160000. Its totient is φ = 146506608.

The previous prime is 260808241. The next prime is 260808299. The reversal of 260808261 is 162808062.

It is not a de Polignac number, because 260808261 - 2⁹ = 260807749 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260808211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104011 + ... + 106488.

It is an arithmetic number, because the mean of its divisors is an integer number (25260000).

Almost surely, 2^260808261 is an apocalyptic number.

260808261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

260808261 is a deficient number, since it is larger than the sum of its proper divisors (143351739).

260808261 is a wasteful number, since it uses less digits than its factorization.

260808261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210568.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 260808261 is about 16149.5591580699. The cubic root of 260808261 is about 638.9111212808.

The spelling of 260808261 in words is "two hundred sixty million, eight hundred eight thousand, two hundred sixty-one".