660235 has 4 divisors (see below), whose sum is σ = 792288. Its totient is φ = 528184.

The previous prime is 660227. The next prime is 660241. The reversal of 660235 is 532066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 660235 - 2³ = 660227 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66019 + ... + 66028.

It is an arithmetic number, because the mean of its divisors is an integer number (198072).

2⁶⁶⁰²³⁵ is an apocalyptic number.

660235 is a deficient number, since it is larger than the sum of its proper divisors (132053).

660235 is a wasteful number, since it uses less digits than its factorization.

660235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132052.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 660235 is about 812.5484600933. The cubic root of 660235 is about 87.0762092618.

The spelling of 660235 in words is "six hundred sixty thousand, two hundred thirty-five".