63630700660 has 12 divisors (see below), whose sum is σ = 133624471428. Its totient is φ = 25452280256.

The previous prime is 63630700643. The next prime is 63630700673. The reversal of 63630700660 is 6600703636.

It can be written as a sum of positive squares in 2 ways, for example, as 19659965796 + 43970734864 = 140214^2 + 209692^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1590767497 + ... + 1590767536.

It is an arithmetic number, because the mean of its divisors is an integer number (11135372619).

Almost surely, 2^63630700660 is an apocalyptic number.

It is an amenable number.

63630700660 is an abundant number, since it is smaller than the sum of its proper divisors (69993770768).

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

63630700660 is a wasteful number, since it uses less digits than its factorization.

63630700660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181535042 (or 3181535040 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 37.

The spelling of 63630700660 in words is "sixty-three billion, six hundred thirty million, seven hundred thousand, six hundred sixty".