265461560 has 128 divisors (see below), whose sum is σ = 740638080. Its totient is φ = 83386368.

The previous prime is 265461533. The next prime is 265461583. The reversal of 265461560 is 65164562.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 265461560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847964 + ... + 848276.

It is an arithmetic number, because the mean of its divisors is an integer number (5786235).

Almost surely, 2^265461560 is an apocalyptic number.

265461560 is a gapful number since it is divisible by the number (20) 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 265461560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370319040).

265461560 is an abundant number, since it is smaller than the sum of its proper divisors (475176520).

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

265461560 is a wasteful number, since it uses less digits than its factorization.

265461560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 265461560 is about 16292.9911311582. The cubic root of 265461560 is about 642.6885273943.

The spelling of 265461560 in words is "two hundred sixty-five million, four hundred sixty-one thousand, five hundred sixty".