660000403712 has 36 divisors (see below), whose sum is σ = 1418762894220. Its totient is φ = 304615569408.

The previous prime is 660000403663. The next prime is 660000403729. The reversal of 660000403712 is 217304000066.

It can be written as a sum of positive squares in 2 ways, for example, as 53446041856 + 606554361856 = 231184^2 + 778816^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 99155387 + ... + 99162042.

It is an arithmetic number, because the mean of its divisors is an integer number (39410080395).

Almost surely, 2^660000403712 is an apocalyptic number.

It is an amenable number.

660000403712 is an abundant number, since it is smaller than the sum of its proper divisors (758762490508).

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

660000403712 is a wasteful number, since it uses less digits than its factorization.

660000403712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198317458 (or 198317444 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

Adding to 660000403712 its reverse (217304000066), we get a palindrome (877304403778).

The spelling of 660000403712 in words is "six hundred sixty billion, four hundred three thousand, seven hundred twelve".