260218805 has 32 divisors (see below), whose sum is σ = 401891328. Its totient is φ = 156974400.

The previous prime is 260218801. The next prime is 260218859. The reversal of 260218805 is 508812062.

It is not a de Polignac number, because 260218805 - 2² = 260218801 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260218801) 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 31 ways as a sum of consecutive naturals, for example, 1034 + ... + 22836.

It is an arithmetic number, because the mean of its divisors is an integer number (12559104).

Almost surely, 2^260218805 is an apocalyptic number.

It is an amenable number.

260218805 is a deficient number, since it is larger than the sum of its proper divisors (141672523).

260218805 is a wasteful number, since it uses less digits than its factorization.

260218805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21857.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 260218805 is about 16131.2989247611. The cubic root of 260218805 is about 638.4294212045.

The spelling of 260218805 in words is "two hundred sixty million, two hundred eighteen thousand, eight hundred five".