660630189 has 16 divisors (see below), whose sum is σ = 885694464. Its totient is φ = 438001200.

The previous prime is 660630163. The next prime is 660630197. The reversal of 660630189 is 981036066.

It is a happy number.

660630189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660630189 - 2²⁰ = 659581613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660635189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563574 + ... + 564744.

It is an arithmetic number, because the mean of its divisors is an integer number (55355904).

Almost surely, 2^660630189 is an apocalyptic number.

It is an amenable number.

660630189 is a deficient number, since it is larger than the sum of its proper divisors (225064275).

660630189 is a wasteful number, since it uses less digits than its factorization.

660630189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 660630189 is about 25702.7272677434. The cubic root of 660630189 is about 870.9357918645.

The spelling of 660630189 in words is "six hundred sixty million, six hundred thirty thousand, one hundred eighty-nine".