660117 has 16 divisors (see below), whose sum is σ = 954560. Its totient is φ = 404352.

The previous prime is 660103. The next prime is 660119. The reversal of 660117 is 711066.

It is not a de Polignac number, because 660117 - 2⁶ = 660053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660093 and 660102.

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 660117.

It is not an unprimeable number, because it can be changed into a prime (660119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1953 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (59660).

2⁶⁶⁰¹¹⁷ is an apocalyptic number.

It is an amenable number.

660117 is a deficient number, since it is larger than the sum of its proper divisors (294443).

660117 is a wasteful number, since it uses less digits than its factorization.

660117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 660117 is about 812.4758457948. The cubic root of 660117 is about 87.0710214096.

It can be divided in two parts, 660 and 117, that added together give a palindrome (777).

The spelling of 660117 in words is "six hundred sixty thousand, one hundred seventeen".