660346 has 8 divisors (see below), whose sum is σ = 1014804. Its totient is φ = 322080.

The previous prime is 660337. The next prime is 660347. The reversal of 660346 is 643066.

It is a happy number.

660346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 648025 + 12321 = 805^2 + 111^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 660346.

It is not an unprimeable number, because it can be changed into a prime (660347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3945 + ... + 4108.

2⁶⁶⁰³⁴⁶ is an apocalyptic number.

660346 is a deficient number, since it is larger than the sum of its proper divisors (354458).

660346 is a wasteful number, since it uses less digits than its factorization.

660346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 660346 is about 812.6167608412. The cubic root of 660346 is about 87.0810887959.

The spelling of 660346 in words is "six hundred sixty thousand, three hundred forty-six".