660562 has 16 divisors (see below), whose sum is σ = 1172160. Its totient is φ = 273168.

The previous prime is 660559. The next prime is 660563. The reversal of 660562 is 265066.

It is not an unprimeable number, because it can be changed into a prime (660563) by changing a digit.

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, 408 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (73260).

2⁶⁶⁰⁵⁶² is an apocalyptic number.

660562 is a deficient number, since it is larger than the sum of its proper divisors (511598).

660562 is a wasteful number, since it uses less digits than its factorization.

660562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 660562 is about 812.7496539526. The cubic root of 660562 is about 87.0905825384.

The spelling of 660562 in words is "six hundred sixty thousand, five hundred sixty-two".