260985359 has 4 divisors (see below), whose sum is σ = 261064104. Its totient is φ = 260906616.

The previous prime is 260985353. The next prime is 260985391. The reversal of 260985359 is 953589062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260985359 is a prime.

It is a super-2 number, since 2×260985359² = 136226715224717762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260985353) 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, 34172 + ... + 41105.

It is an arithmetic number, because the mean of its divisors is an integer number (65266026).

Almost surely, 2^260985359 is an apocalyptic number.

260985359 is a deficient number, since it is larger than the sum of its proper divisors (78745).

260985359 is an equidigital number, since it uses as much as digits as its factorization.

260985359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78744.

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 260985359 is about 16155.0412874743. The cubic root of 260985359 is about 639.0557029492.

The spelling of 260985359 in words is "two hundred sixty million, nine hundred eighty-five thousand, three hundred fifty-nine".