260665212 has 12 divisors (see below), whose sum is σ = 608218856. Its totient is φ = 86888400.

The previous prime is 260665189. The next prime is 260665213. The reversal of 260665212 is 212566062.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 260665212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260665213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10861039 + ... + 10861062.

Almost surely, 2^260665212 is an apocalyptic number.

It is an amenable number.

260665212 is an abundant number, since it is smaller than the sum of its proper divisors (347553644).

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

260665212 is a wasteful number, since it uses less digits than its factorization.

260665212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21722108 (or 21722106 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 260665212 is about 16145.1296681073. The cubic root of 260665212 is about 638.7942892048.

The spelling of 260665212 in words is "two hundred sixty million, six hundred sixty-five thousand, two hundred twelve".