65812608 has 128 divisors (see below), whose sum is σ = 197064000. Its totient is φ = 21620736.

The previous prime is 65812601. The next prime is 65812619. The reversal of 65812608 is 80621856.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (65812601) 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 15 ways as a sum of consecutive naturals, for example, 473403 + ... + 473541.

Almost surely, 2^65812608 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 65812608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98532000).

65812608 is an abundant number, since it is smaller than the sum of its proper divisors (131251392).

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

65812608 is a wasteful number, since it uses less digits than its factorization.

65812608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 65812608 is about 8112.4970261936. The cubic root of 65812608 is about 403.7411667562.

The spelling of 65812608 in words is "sixty-five million, eight hundred twelve thousand, six hundred eight".