65880768 has 56 divisors (see below), whose sum is σ = 178582320. Its totient is φ = 21422080.

The previous prime is 65880761. The next prime is 65880791. The reversal of 65880768 is 86708856.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (65880761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3688 + ... + 12056.

It is an arithmetic number, because the mean of its divisors is an integer number (3188970).

Almost surely, 2^65880768 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 65880768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89291160).

65880768 is an abundant number, since it is smaller than the sum of its proper divisors (112701552).

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

65880768 is a wasteful number, since it uses less digits than its factorization.

65880768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8425 (or 8415 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 65880768 is about 8116.6968651047. The cubic root of 65880768 is about 403.8804992440.

The spelling of 65880768 in words is "sixty-five million, eight hundred eighty thousand, seven hundred sixty-eight".