260666868 has 144 divisors (see below), whose sum is σ = 779563008. Its totient is φ = 67032000.

The previous prime is 260666863. The next prime is 260666869. The reversal of 260666868 is 868666062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260666863) 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 47 ways as a sum of consecutive naturals, for example, 1235283 + ... + 1235493.

It is an arithmetic number, because the mean of its divisors is an integer number (5413632).

Almost surely, 2^260666868 is an apocalyptic number.

260666868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260666868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389781504).

260666868 is an abundant number, since it is smaller than the sum of its proper divisors (518896140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

260666868 is a wasteful number, since it uses less digits than its factorization.

260666868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 260666868 is about 16145.1809528416. The cubic root of 260666868 is about 638.7956419503.

The spelling of 260666868 in words is "two hundred sixty million, six hundred sixty-six thousand, eight hundred sixty-eight".