660876 has 12 divisors (see below), whose sum is σ = 1542072. Its totient is φ = 220288.

The previous prime is 660853. The next prime is 660887. The reversal of 660876 is 678066.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

660876 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27525 + ... + 27548.

It is an arithmetic number, because the mean of its divisors is an integer number (128506).

2⁶⁶⁰⁸⁷⁶ is an apocalyptic number.

It is an amenable number.

660876 is an abundant number, since it is smaller than the sum of its proper divisors (881196).

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

660876 is a wasteful number, since it uses less digits than its factorization.

660876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55080 (or 55078 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 660876 is about 812.9428024160. The cubic root of 660876 is about 87.1043799367.

The spelling of 660876 in words is "six hundred sixty thousand, eight hundred seventy-six".