265939616 has 48 divisors (see below), whose sum is σ = 554589504. Its totient is φ = 125266944.

The previous prime is 265939603. The next prime is 265939673. The reversal of 265939616 is 616939562.

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, 46616 + ... + 52008.

It is an arithmetic number, because the mean of its divisors is an integer number (11553948).

Almost surely, 2^265939616 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 265939616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277294752).

265939616 is an abundant number, since it is smaller than the sum of its proper divisors (288649888).

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

265939616 is a wasteful number, since it uses less digits than its factorization.

265939616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493 (or 5485 counting only the distinct ones).

The product of its digits is 524880, while the sum is 47.

The square root of 265939616 is about 16307.6551349359. The cubic root of 265939616 is about 643.0740908878.

The spelling of 265939616 in words is "two hundred sixty-five million, nine hundred thirty-nine thousand, six hundred sixteen".