660630530 has 16 divisors (see below), whose sum is σ = 1359011520. Its totient is φ = 226501872.

The previous prime is 660630497. The next prime is 660630533. The reversal of 660630530 is 35036066.

It is a junction number, because it is equal to n+sod(n) for n = 660630493 and 660630502.

It is not an unprimeable number, because it can be changed into a prime (660630533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4718720 + ... + 4718859.

It is an arithmetic number, because the mean of its divisors is an integer number (84938220).

Almost surely, 2^660630530 is an apocalyptic number.

660630530 is an abundant number, since it is smaller than the sum of its proper divisors (698380990).

660630530 is a wasteful number, since it uses less digits than its factorization.

660630530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9437593.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 660630530 is about 25702.7339012798. The cubic root of 660630530 is about 870.9359417159.

Adding to 660630530 its reverse (35036066), we get a palindrome (695666596).

The spelling of 660630530 in words is "six hundred sixty million, six hundred thirty thousand, five hundred thirty".