265761216 has 224 divisors, whose sum is σ = 905134080. Its totient is φ = 74898432.

The previous prime is 265761211. The next prime is 265761217. The reversal of 265761216 is 612167562.

It is a happy number.

265761216 is a `hidden beast` number, since 26 + 5 + 7 + 612 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265761211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1536106 + ... + 1536278.

Almost surely, 2^265761216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265761216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452567040).

265761216 is an abundant number, since it is smaller than the sum of its proper divisors (639372864).

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

265761216 is a wasteful number, since it uses less digits than its factorization.

265761216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 312 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 265761216 is about 16302.1843935100. The cubic root of 265761216 is about 642.9302611436.

The spelling of 265761216 in words is "two hundred sixty-five million, seven hundred sixty-one thousand, two hundred sixteen".