630620642421 has 96 divisors (see below), whose sum is σ = 1159481107200. Its totient is φ = 327413923200.

The previous prime is 630620642371. The next prime is 630620642441. The reversal of 630620642421 is 124246026036.

630620642421 is a `hidden beast` number, since 6 + 3 + 0 + 6 + 2 + 0 + 642 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 630620642421 - 2¹¹ = 630620640373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630620642441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79489371 + ... + 79497303.

It is an arithmetic number, because the mean of its divisors is an integer number (12077928200).

Almost surely, 2^630620642421 is an apocalyptic number.

It is an amenable number.

630620642421 is a deficient number, since it is larger than the sum of its proper divisors (528860464779).

630620642421 is a wasteful number, since it uses less digits than its factorization.

630620642421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10312 (or 10295 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 630620642421 its reverse (124246026036), we get a palindrome (754866668457).

The spelling of 630620642421 in words is "six hundred thirty billion, six hundred twenty million, six hundred forty-two thousand, four hundred twenty-one".