65550368 has 144 divisors (see below), whose sum is σ = 159376896. Its totient is φ = 26357760.

The previous prime is 65550319. The next prime is 65550389. The reversal of 65550368 is 86305556.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2114513 + ... + 2114543.

It is an arithmetic number, because the mean of its divisors is an integer number (1106784).

Almost surely, 2^65550368 is an apocalyptic number.

65550368 is a gapful number since it is divisible by the number (68) 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 65550368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79688448).

65550368 is an abundant number, since it is smaller than the sum of its proper divisors (93826528).

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

65550368 is a wasteful number, since it uses less digits than its factorization.

65550368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 65550368 is about 8096.3181755660. The cubic root of 65550368 is about 403.2041975921.

The spelling of 65550368 in words is "sixty-five million, five hundred fifty thousand, three hundred sixty-eight".