660045630 has 64 divisors (see below), whose sum is σ = 1608242688. Its totient is φ = 173351040.

The previous prime is 660045629. The next prime is 660045637. The reversal of 660045630 is 36540066.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660045637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 700960 + ... + 701900.

It is an arithmetic number, because the mean of its divisors is an integer number (25128792).

Almost surely, 2^660045630 is an apocalyptic number.

660045630 is an abundant number, since it is smaller than the sum of its proper divisors (948197058).

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

660045630 is a wasteful number, since it uses less digits than its factorization.

660045630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 660045630 is about 25691.3532146518. The cubic root of 660045630 is about 870.6788333821.

Adding to 660045630 its reverse (36540066), we get a palindrome (696585696).

It can be divided in two parts, 660045 and 630, that added together give a triangular number (660675 = T₁₁₄₉).

The spelling of 660045630 in words is "six hundred sixty million, forty-five thousand, six hundred thirty".