260340660 has 72 divisors (see below), whose sum is σ = 831274080. Its totient is φ = 65769408.

The previous prime is 260340659. The next prime is 260340667. The reversal of 260340660 is 66043062.

260340660 is a `hidden beast` number, since 260 + 340 + 6 + 60 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260340667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34642 + ... + 41481.

Almost surely, 2^260340660 is an apocalyptic number.

260340660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260340660 is an abundant number, since it is smaller than the sum of its proper divisors (570933420).

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

260340660 is a wasteful number, since it uses less digits than its factorization.

260340660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76157 (or 76152 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 260340660 is about 16135.0754569044. The cubic root of 260340660 is about 638.5290600154.

The spelling of 260340660 in words is "two hundred sixty million, three hundred forty thousand, six hundred sixty".