65783808 has 144 divisors (see below), whose sum is σ = 196756560. Its totient is φ = 21159936.

The previous prime is 65783801. The next prime is 65783813. The reversal of 65783808 is 80838756.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (65783801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 792535 + ... + 792617.

It is an arithmetic number, because the mean of its divisors is an integer number (1366365).

Almost surely, 2^65783808 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 65783808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98378280).

65783808 is an abundant number, since it is smaller than the sum of its proper divisors (130972752).

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

65783808 is a wasteful number, since it uses less digits than its factorization.

65783808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 65783808 is about 8110.7217927876. The cubic root of 65783808 is about 403.6822649617.

The spelling of 65783808 in words is "sixty-five million, seven hundred eighty-three thousand, eight hundred eight".