65318880 has 192 divisors, whose sum is σ = 228614400. Its totient is φ = 15544320.

The previous prime is 65318857. The next prime is 65318881. The reversal of 65318880 is 8881356.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65318881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469851 + ... + 469989.

It is an arithmetic number, because the mean of its divisors is an integer number (1190700).

Almost surely, 2^65318880 is an apocalyptic number.

65318880 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 65318880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114307200).

65318880 is an abundant number, since it is smaller than the sum of its proper divisors (163295520).

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

65318880 is a wasteful number, since it uses less digits than its factorization.

65318880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 65318880 is about 8082.0096510707. The cubic root of 65318880 is about 402.7290056451.

The spelling of 65318880 in words is "sixty-five million, three hundred eighteen thousand, eight hundred eighty".