4563630721 has 16 divisors (see below), whose sum is σ = 5247639936. Its totient is φ = 3935707776.

The previous prime is 4563630713. The next prime is 4563630737. The reversal of 4563630721 is 1270363654.

It is not a de Polignac number, because 4563630721 - 2³ = 4563630713 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4563630761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164620 + ... + 190333.

It is an arithmetic number, because the mean of its divisors is an integer number (327977496).

Almost surely, 2^4563630721 is an apocalyptic number.

It is an amenable number.

4563630721 is a deficient number, since it is larger than the sum of its proper divisors (684009215).

4563630721 is a wasteful number, since it uses less digits than its factorization.

4563630721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355032.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 4563630721 is about 67554.6498843714. The cubic root of 4563630721 is about 1658.7088621120.

The spelling of 4563630721 in words is "four billion, five hundred sixty-three million, six hundred thirty thousand, seven hundred twenty-one".