73660 has 24 divisors (see below), whose sum is σ = 161280. Its totient is φ = 28224.

The previous prime is 73651. The next prime is 73673. The reversal of 73660 is 6637.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517 + ... + 643.

It is an arithmetic number, because the mean of its divisors is an integer number (6720).

2⁷³⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80640).

73660 is an abundant number, since it is smaller than the sum of its proper divisors (87620).

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

73660 is a wasteful number, since it uses less digits than its factorization.

73660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 73660 is about 271.4037582643. The cubic root of 73660 is about 41.9189669636.

The spelling of 73660 in words is "seventy-three thousand, six hundred sixty".