260784385 has 16 divisors (see below), whose sum is σ = 324829440. Its totient is φ = 200751040.

The previous prime is 260784371. The next prime is 260784389. The reversal of 260784385 is 583487062.

It is not a de Polignac number, because 260784385 - 2¹³ = 260776193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260784389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42204 + ... + 47986.

It is an arithmetic number, because the mean of its divisors is an integer number (20301840).

Almost surely, 2^260784385 is an apocalyptic number.

It is an amenable number.

260784385 is a deficient number, since it is larger than the sum of its proper divisors (64045055).

260784385 is a wasteful number, since it uses less digits than its factorization.

260784385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6128.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 260784385 is about 16148.8199259265. The cubic root of 260784385 is about 638.8916240617.

The spelling of 260784385 in words is "two hundred sixty million, seven hundred eighty-four thousand, three hundred eighty-five".