65705648 has 60 divisors (see below), whose sum is σ = 139325160. Its totient is φ = 29933568.

The previous prime is 65705639. The next prime is 65705659. The reversal of 65705648 is 84650756.

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, 255536 + ... + 255792.

It is an arithmetic number, because the mean of its divisors is an integer number (2322086).

Almost surely, 2^65705648 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 65705648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69662580).

65705648 is an abundant number, since it is smaller than the sum of its proper divisors (73619512).

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

65705648 is a wasteful number, since it uses less digits than its factorization.

65705648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 65705648 is about 8105.9020472739. The cubic root of 65705648 is about 403.5223253505.

The spelling of 65705648 in words is "sixty-five million, seven hundred five thousand, six hundred forty-eight".