65947648 has 48 divisors (see below), whose sum is σ = 142063740. Its totient is φ = 30425088.

The previous prime is 65947643. The next prime is 65947691. The reversal of 65947648 is 84674956.

It can be written as a sum of positive squares in 2 ways, for example, as 63489024 + 2458624 = 7968^2 + 1568^2 .

It is not an unprimeable number, because it can be changed into a prime (65947643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25386 + ... + 27862.

Almost surely, 2^65947648 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 65947648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71031870).

65947648 is an abundant number, since it is smaller than the sum of its proper divisors (76116092).

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

65947648 is a wasteful number, since it uses less digits than its factorization.

65947648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512 (or 2492 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 65947648 is about 8120.8157225737. The cubic root of 65947648 is about 404.0171217787.

The spelling of 65947648 in words is "sixty-five million, nine hundred forty-seven thousand, six hundred forty-eight".