260666071 has 4 divisors (see below), whose sum is σ = 265084200. Its totient is φ = 256247944.

The previous prime is 260666059. The next prime is 260666099. The reversal of 260666071 is 170666062.

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

It is a cyclic number.

It is not a de Polignac number, because 260666071 - 2⁵ = 260666039 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 (260666041) 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 3 ways as a sum of consecutive naturals, for example, 2208976 + ... + 2209093.

It is an arithmetic number, because the mean of its divisors is an integer number (66271050).

Almost surely, 2^260666071 is an apocalyptic number.

260666071 is a deficient number, since it is larger than the sum of its proper divisors (4418129).

260666071 is an equidigital number, since it uses as much as digits as its factorization.

260666071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418128.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 260666071 is about 16145.1562705351. The cubic root of 260666071 is about 638.7949909014.

Subtracting from 260666071 its reverse (170666062), we obtain a palindrome (90000009).

The spelling of 260666071 in words is "two hundred sixty million, six hundred sixty-six thousand, seventy-one".