260642660 has 12 divisors (see below), whose sum is σ = 547349628. Its totient is φ = 104257056.

The previous prime is 260642639. The next prime is 260642677. The reversal of 260642660 is 66246062.

260642660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 92006464 + 168636196 = 9592^2 + 12986^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6516047 + ... + 6516086.

It is an arithmetic number, because the mean of its divisors is an integer number (45612469).

Almost surely, 2^260642660 is an apocalyptic number.

260642660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260642660 is an abundant number, since it is smaller than the sum of its proper divisors (286706968).

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

260642660 is a wasteful number, since it uses less digits than its factorization.

260642660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13032142 (or 13032140 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 260642660 is about 16144.4312380461. The cubic root of 260642660 is about 638.7758664622.

The spelling of 260642660 in words is "two hundred sixty million, six hundred forty-two thousand, six hundred sixty".