260647261 has 4 divisors (see below), whose sum is σ = 297882592. Its totient is φ = 223411932.

The previous prime is 260647259. The next prime is 260647313. The reversal of 260647261 is 162746062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 260647261 - 2¹ = 260647259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260647241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18617655 + ... + 18617668.

It is an arithmetic number, because the mean of its divisors is an integer number (74470648).

Almost surely, 2^260647261 is an apocalyptic number.

It is an amenable number.

260647261 is a deficient number, since it is larger than the sum of its proper divisors (37235331).

260647261 is an equidigital number, since it uses as much as digits as its factorization.

260647261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37235330.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 260647261 is about 16144.5737323721. The cubic root of 260647261 is about 638.7796251082.

The spelling of 260647261 in words is "two hundred sixty million, six hundred forty-seven thousand, two hundred sixty-one".