260145666 has 48 divisors (see below), whose sum is σ = 616356000. Its totient is φ = 78644160.

The previous prime is 260145659. The next prime is 260145667. The reversal of 260145666 is 666541062.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 260145666.

It is not an unprimeable number, because it can be changed into a prime (260145667) 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, 97486 + ... + 100118.

It is an arithmetic number, because the mean of its divisors is an integer number (12840750).

Almost surely, 2^260145666 is an apocalyptic number.

260145666 is an abundant number, since it is smaller than the sum of its proper divisors (356210334).

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

260145666 is a wasteful number, since it uses less digits than its factorization.

260145666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3151 (or 3148 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 260145666 is about 16129.0317750323. The cubic root of 260145666 is about 638.3696017193.

The spelling of 260145666 in words is "two hundred sixty million, one hundred forty-five thousand, six hundred sixty-six".