630664002440 has 64 divisors (see below), whose sum is σ = 1467716664960. Its totient is φ = 243723271680.

The previous prime is 630664002421. The next prime is 630664002469. The reversal of 630664002440 is 44200466036.

It is a self number, because there is not a number n which added to its sum of digits gives 630664002440.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1697834 + ... + 2035673.

It is an arithmetic number, because the mean of its divisors is an integer number (22933072890).

Almost surely, 2^630664002440 is an apocalyptic number.

It is an amenable number.

630664002440 is an abundant number, since it is smaller than the sum of its proper divisors (837052662520).

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

630664002440 is a wasteful number, since it uses less digits than its factorization.

630664002440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3733662 (or 3733658 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 630664002440 its reverse (44200466036), we get a palindrome (674864468476).

The spelling of 630664002440 in words is "six hundred thirty billion, six hundred sixty-four million, two thousand, four hundred forty".