260865564 has 24 divisors (see below), whose sum is σ = 608955648. Its totient is φ = 86916720.

The previous prime is 260865551. The next prime is 260865571. The reversal of 260865564 is 465568062.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40579 + ... + 46565.

It is an arithmetic number, because the mean of its divisors is an integer number (25373152).

Almost surely, 2^260865564 is an apocalyptic number.

It is an amenable number.

260865564 is an abundant number, since it is smaller than the sum of its proper divisors (348090084).

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

260865564 is a wasteful number, since it uses less digits than its factorization.

260865564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625 (or 9623 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 260865564 is about 16151.3331957458. Note that the first 3 decimals coincide. The cubic root of 260865564 is about 638.9579102422.

The spelling of 260865564 in words is "two hundred sixty million, eight hundred sixty-five thousand, five hundred sixty-four".