260665236 has 192 divisors, whose sum is σ = 772208640. Its totient is φ = 75479040.

The previous prime is 260665231. The next prime is 260665271. The reversal of 260665236 is 632566062.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 260665236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260665231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2306716 + ... + 2306828.

It is an arithmetic number, because the mean of its divisors is an integer number (4021920).

Almost surely, 2^260665236 is an apocalyptic number.

260665236 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260665236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386104320).

260665236 is an abundant number, since it is smaller than the sum of its proper divisors (511543404).

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

260665236 is a wasteful number, since it uses less digits than its factorization.

260665236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 260665236 is about 16145.1304113655. The cubic root of 260665236 is about 638.7943088098.

The spelling of 260665236 in words is "two hundred sixty million, six hundred sixty-five thousand, two hundred thirty-six".