65120616 has 48 divisors (see below), whose sum is σ = 192404160. Its totient is φ = 19733280.

The previous prime is 65120603. The next prime is 65120639. The reversal of 65120616 is 61602156.

It is a happy number.

65120616 is a `hidden beast` number, since 651 + 2 + 0 + 6 + 1 + 6 = 666.

65120616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 65120616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40320 + ... + 41903.

It is an arithmetic number, because the mean of its divisors is an integer number (4008420).

Almost surely, 2^65120616 is an apocalyptic number.

65120616 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

65120616 is an abundant number, since it is smaller than the sum of its proper divisors (127283544).

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

65120616 is a wasteful number, since it uses less digits than its factorization.

65120616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82246 (or 82239 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 65120616 is about 8069.7345681255. The cubic root of 65120616 is about 402.3211216003.

The spelling of 65120616 in words is "sixty-five million, one hundred twenty thousand, six hundred sixteen".