65680930 has 32 divisors (see below), whose sum is σ = 135394560. Its totient is φ = 22472640.

The previous prime is 65680919. The next prime is 65680943. The reversal of 65680930 is 3908656.

65680930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 65680930.

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, 63820 + ... + 64840.

It is an arithmetic number, because the mean of its divisors is an integer number (4231080).

Almost surely, 2^65680930 is an apocalyptic number.

65680930 is an abundant number, since it is smaller than the sum of its proper divisors (69713630).

65680930 is a wasteful number, since it uses less digits than its factorization.

65680930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 65680930 is about 8104.3772123464. The cubic root of 65680930 is about 403.4717182558.

The spelling of 65680930 in words is "sixty-five million, six hundred eighty thousand, nine hundred thirty".