65147808 has 192 divisors, whose sum is σ = 209018880. Its totient is φ = 17510400.

The previous prime is 65147783. The next prime is 65147813. The reversal of 65147808 is 80874156.

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 31 ways as a sum of consecutive naturals, for example, 340993 + ... + 341183.

It is an arithmetic number, because the mean of its divisors is an integer number (1088640).

Almost surely, 2^65147808 is an apocalyptic number.

65147808 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 65147808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104509440).

65147808 is an abundant number, since it is smaller than the sum of its proper divisors (143871072).

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

65147808 is a wasteful number, since it uses less digits than its factorization.

65147808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 65147808 is about 8071.4192060628. The cubic root of 65147808 is about 402.3771120288.

The spelling of 65147808 in words is "sixty-five million, one hundred forty-seven thousand, eight hundred eight".