660845630 has 16 divisors (see below), whose sum is σ = 1190397600. Its totient is φ = 264143712.

The previous prime is 660845621. The next prime is 660845639. The reversal of 660845630 is 36548066.

It is an interprime number because it is at equal distance from previous prime (660845621) and next prime (660845639).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660845639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9629 + ... + 37608.

It is an arithmetic number, because the mean of its divisors is an integer number (74399850).

Almost surely, 2^660845630 is an apocalyptic number.

660845630 is a deficient number, since it is larger than the sum of its proper divisors (529551970).

660845630 is a wasteful number, since it uses less digits than its factorization.

660845630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48643.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 660845630 is about 25706.9179405078. The cubic root of 660845630 is about 871.0304564681.

The spelling of 660845630 in words is "six hundred sixty million, eight hundred forty-five thousand, six hundred thirty".