660675 has 24 divisors (see below), whose sum is σ = 1142784. Its totient is φ = 336160.

The previous prime is 660661. The next prime is 660683. The reversal of 660675 is 576066.

660675 is a nontrivial binomial coefficient, being equal to C(1150, 2).

It is not a de Polignac number, because 660675 - 2⁴ = 660659 is a prime.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660675.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1534 + ... + 1916.

It is an arithmetic number, because the mean of its divisors is an integer number (47616).

2⁶⁶⁰⁶⁷⁵ is an apocalyptic number.

660675 is the 1149-th triangular number and also the 575-th hexagonal number.

660675 is a deficient number, since it is larger than the sum of its proper divisors (482109).

660675 is a wasteful number, since it uses less digits than its factorization.

660675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 660675 is about 812.8191680811. The cubic root of 660675 is about 87.0955483477.

The spelling of 660675 in words is "six hundred sixty thousand, six hundred seventy-five".