65730660 has 96 divisors (see below), whose sum is σ = 191452800. Its totient is φ = 16837632.

The previous prime is 65730659. The next prime is 65730673. The reversal of 65730660 is 6603756.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188166 + ... + 188514.

It is an arithmetic number, because the mean of its divisors is an integer number (1994300).

Almost surely, 2^65730660 is an apocalyptic number.

65730660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65730660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95726400).

65730660 is an abundant number, since it is smaller than the sum of its proper divisors (125722140).

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

65730660 is a wasteful number, since it uses less digits than its factorization.

65730660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 65730660 is about 8107.4447269161. Note that the first 3 decimals coincide. The cubic root of 65730660 is about 403.5735214567.

The spelling of 65730660 in words is "sixty-five million, seven hundred thirty thousand, six hundred sixty".