65051808 has 48 divisors (see below), whose sum is σ = 171694656. Its totient is φ = 21565440.

The previous prime is 65051759. The next prime is 65051837. The reversal of 65051808 is 80815056.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16773 + ... + 20283.

It is an arithmetic number, because the mean of its divisors is an integer number (3576972).

Almost surely, 2^65051808 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 65051808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85847328).

65051808 is an abundant number, since it is smaller than the sum of its proper divisors (106642848).

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

65051808 is a wasteful number, since it uses less digits than its factorization.

65051808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717 (or 3709 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 65051808 is about 8065.4701040919. The cubic root of 65051808 is about 402.1793709571.

The spelling of 65051808 in words is "sixty-five million, fifty-one thousand, eight hundred eight".