265883616 has 72 divisors (see below), whose sum is σ = 770416920. Its totient is φ = 86950656.

The previous prime is 265883581. The next prime is 265883623. The reversal of 265883616 is 616388562.

265883616 is a `hidden beast` number, since 2 + 6 + 588 + 3 + 61 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6555 + ... + 23973.

It is an arithmetic number, because the mean of its divisors is an integer number (10700235).

Almost surely, 2^265883616 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 265883616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385208460).

265883616 is an abundant number, since it is smaller than the sum of its proper divisors (504533304).

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

265883616 is a wasteful number, since it uses less digits than its factorization.

265883616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17488 (or 17477 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 265883616 is about 16305.9380594923. The cubic root of 265883616 is about 643.0289494660.

The spelling of 265883616 in words is "two hundred sixty-five million, eight hundred eighty-three thousand, six hundred sixteen".