65275240 has 64 divisors (see below), whose sum is σ = 158241600. Its totient is φ = 24142848.

The previous prime is 65275229. The next prime is 65275283. The reversal of 65275240 is 4257256.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39307 + ... + 40933.

It is an arithmetic number, because the mean of its divisors is an integer number (2472525).

Almost surely, 2^65275240 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 65275240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79120800).

65275240 is an abundant number, since it is smaller than the sum of its proper divisors (92966360).

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

65275240 is a wasteful number, since it uses less digits than its factorization.

65275240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 65275240 is about 8079.3093764257. The cubic root of 65275240 is about 402.6392969765.

The spelling of 65275240 in words is "sixty-five million, two hundred seventy-five thousand, two hundred forty".