65648760 has 64 divisors (see below), whose sum is σ = 198305280. Its totient is φ = 17385600.

The previous prime is 65648753. The next prime is 65648777. The reversal of 65648760 is 6784656.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16309 + ... + 19931.

It is an arithmetic number, because the mean of its divisors is an integer number (3098520).

Almost surely, 2^65648760 is an apocalyptic number.

65648760 is a gapful number since it is divisible by the number (60) 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 65648760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99152640).

65648760 is an abundant number, since it is smaller than the sum of its proper divisors (132656520).

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

65648760 is a wasteful number, since it uses less digits than its factorization.

65648760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788 (or 3784 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 65648760 is about 8102.3922393328. The cubic root of 65648760 is about 403.4058350796.

The spelling of 65648760 in words is "sixty-five million, six hundred forty-eight thousand, seven hundred sixty".