260278261 has 8 divisors (see below), whose sum is σ = 264297600. Its totient is φ = 256268880.

The previous prime is 260278259. The next prime is 260278297. The reversal of 260278261 is 162872062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 260278261 - 2¹ = 260278259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260278561) 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 7 ways as a sum of consecutive naturals, for example, 63255 + ... + 67243.

It is an arithmetic number, because the mean of its divisors is an integer number (33037200).

Almost surely, 2^260278261 is an apocalyptic number.

It is an amenable number.

260278261 is a deficient number, since it is larger than the sum of its proper divisors (4019339).

260278261 is an equidigital number, since it uses as much as digits as its factorization.

260278261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 260278261 is about 16133.1416965202. The cubic root of 260278261 is about 638.4780412739.

The spelling of 260278261 in words is "two hundred sixty million, two hundred seventy-eight thousand, two hundred sixty-one".