660193 has 4 divisors (see below), whose sum is σ = 694960. Its totient is φ = 625428.

The previous prime is 660181. The next prime is 660197. The reversal of 660193 is 391066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 660193 - 2¹⁷ = 529121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17355 + ... + 17392.

It is an arithmetic number, because the mean of its divisors is an integer number (173740).

2⁶⁶⁰¹⁹³ is an apocalyptic number.

It is an amenable number.

660193 is a deficient number, since it is larger than the sum of its proper divisors (34767).

660193 is a wasteful number, since it uses less digits than its factorization.

660193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34766.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 660193 is about 812.5226150699. The cubic root of 660193 is about 87.0743628090.

The spelling of 660193 in words is "six hundred sixty thousand, one hundred ninety-three".