66930 has 32 divisors (see below), whose sum is σ = 169344. Its totient is φ = 16896.

The previous prime is 66923. The next prime is 66931. The reversal of 66930 is 3966.

It is a self number, because there is not a number n which added to its sum of digits gives 66930.

It is not an unprimeable number, because it can be changed into a prime (66931) by changing a digit.

66930 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642 + ... + 738.

It is an arithmetic number, because the mean of its divisors is an integer number (5292).

2⁶⁶⁹³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84672).

66930 is an abundant number, since it is smaller than the sum of its proper divisors (102414).

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

66930 is a wasteful number, since it uses less digits than its factorization.

66930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 66930 is about 258.7083299780. The cubic root of 66930 is about 40.6013313807.

The spelling of 66930 in words is "sixty-six thousand, nine hundred thirty".