660849 has 8 divisors (see below), whose sum is σ = 1007040. Its totient is φ = 377616.

The previous prime is 660833. The next prime is 660851. The reversal of 660849 is 948066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660849 - 2⁴ = 660833 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (660809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15714 + ... + 15755.

It is an arithmetic number, because the mean of its divisors is an integer number (125880).

2⁶⁶⁰⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

660849 is a deficient number, since it is larger than the sum of its proper divisors (346191).

660849 is a wasteful number, since it uses less digits than its factorization.

660849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31479.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 660849 is about 812.9261959120. The cubic root of 660849 is about 87.1031937080.

The spelling of 660849 in words is "six hundred sixty thousand, eight hundred forty-nine".