65613930 has 32 divisors (see below), whose sum is σ = 157699008. Its totient is φ = 17472000.

The previous prime is 65613929. The next prime is 65613953. The reversal of 65613930 is 3931656.

65613930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65613891 and 65613900.

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 15 ways as a sum of consecutive naturals, for example, 30490 + ... + 32570.

It is an arithmetic number, because the mean of its divisors is an integer number (4928094).

Almost surely, 2^65613930 is an apocalyptic number.

65613930 is an abundant number, since it is smaller than the sum of its proper divisors (92085078).

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

65613930 is a wasteful number, since it uses less digits than its factorization.

65613930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 65613930 is about 8100.2425889599. The cubic root of 65613930 is about 403.3344800338.

The spelling of 65613930 in words is "sixty-five million, six hundred thirteen thousand, nine hundred thirty".