660674 has 16 divisors (see below), whose sum is σ = 1161216. Its totient is φ = 276000.

The previous prime is 660661. The next prime is 660683. The reversal of 660674 is 476066.

It is a Curzon number.

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (72576).

2⁶⁶⁰⁶⁷⁴ is an apocalyptic number.

660674 is a deficient number, since it is larger than the sum of its proper divisors (500542).

660674 is a wasteful number, since it uses less digits than its factorization.

660674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 660674 is about 812.8185529379. The cubic root of 660674 is about 87.0955044050.

The spelling of 660674 in words is "six hundred sixty thousand, six hundred seventy-four".