630540812356 has 81 divisors (see below), whose sum is σ = 1390253391261. Its totient is φ = 249387544224.

The previous prime is 630540812351. The next prime is 630540812399. The reversal of 630540812356 is 653218045036.

The square root of 630540812356 is 794066.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 93275268100 + 537265544256 = 305410^2 + 732984^2 .

It is not an unprimeable number, because it can be changed into a prime (630540812351) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 144517831 + ... + 144522193.

Almost surely, 2^630540812356 is an apocalyptic number.

630540812356 is the 794066-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630540812356

630540812356 is an abundant number, since it is smaller than the sum of its proper divisors (759712578905).

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

630540812356 is an equidigital number, since it uses as much as digits as its factorization.

630540812356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 630540812356 in words is "six hundred thirty billion, five hundred forty million, eight hundred twelve thousand, three hundred fifty-six".