660695 has 16 divisors (see below), whose sum is σ = 929280. Its totient is φ = 441504.

The previous prime is 660683. The next prime is 660719. The reversal of 660695 is 596066.

660695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660695 - 2¹⁰ = 659671 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660695.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1286 + ... + 1724.

It is an arithmetic number, because the mean of its divisors is an integer number (58080).

2⁶⁶⁰⁶⁹⁵ is an apocalyptic number.

660695 is a deficient number, since it is larger than the sum of its proper divisors (268585).

660695 is a wasteful number, since it uses less digits than its factorization.

660695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 660695 is about 812.8314708474. The cubic root of 660695 is about 87.0964271930.

The spelling of 660695 in words is "six hundred sixty thousand, six hundred ninety-five".