660342 has 16 divisors (see below), whose sum is σ = 1330992. Its totient is φ = 218400.

The previous prime is 660337. The next prime is 660347. The reversal of 660342 is 243066.

660342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (660337) and next prime (660347).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 660342.

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

660342 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 7 ways as a sum of consecutive naturals, for example, 592 + ... + 1292.

It is an arithmetic number, because the mean of its divisors is an integer number (83187).

2⁶⁶⁰³⁴² is an apocalyptic number.

660342 is an abundant number, since it is smaller than the sum of its proper divisors (670650).

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

660342 is a wasteful number, since it uses less digits than its factorization.

660342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 660342 is about 812.6142996527. The cubic root of 660342 is about 87.0809129664.

The spelling of 660342 in words is "six hundred sixty thousand, three hundred forty-two".