5630628721 has 4 divisors (see below), whose sum is σ = 5631770944. Its totient is φ = 5629486500.

The previous prime is 5630628713. The next prime is 5630628727. The reversal of 5630628721 is 1278260365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5630628721 - 2³ = 5630628713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5630628727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563685 + ... + 573586.

It is an arithmetic number, because the mean of its divisors is an integer number (1407942736).

Almost surely, 2^5630628721 is an apocalyptic number.

It is an amenable number.

5630628721 is a deficient number, since it is larger than the sum of its proper divisors (1142223).

5630628721 is a wasteful number, since it uses less digits than its factorization.

5630628721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142222.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 5630628721 is about 75037.5154239531. The cubic root of 5630628721 is about 1779.0396621931.

The spelling of 5630628721 in words is "five billion, six hundred thirty million, six hundred twenty-eight thousand, seven hundred twenty-one".