65613884 has 24 divisors (see below), whose sum is σ = 132507648. Its totient is φ = 27846000.

The previous prime is 65613881. The next prime is 65613893. The reversal of 65613884 is 48831656.

65613884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65613881) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8492 + ... + 14259.

It is an arithmetic number, because the mean of its divisors is an integer number (5521152).

Almost surely, 2^65613884 is an apocalyptic number.

It is an amenable number.

65613884 is an abundant number, since it is smaller than the sum of its proper divisors (66893764).

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

65613884 is a wasteful number, since it uses less digits than its factorization.

65613884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22865 (or 22863 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 65613884 is about 8100.2397495383. The cubic root of 65613884 is about 403.3343857784.

The spelling of 65613884 in words is "sixty-five million, six hundred thirteen thousand, eight hundred eighty-four".