630564221 has 16 divisors (see below), whose sum is σ = 764225280. Its totient is φ = 507897600.

The previous prime is 630564203. The next prime is 630564239. The reversal of 630564221 is 122465036.

It is an interprime number because it is at equal distance from previous prime (630564203) and next prime (630564239).

It is not a de Polignac number, because 630564221 - 2⁶ = 630564157 is a prime.

It is a super-2 number, since 2×630564221² = 795222473610673682, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630560221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79640 + ... + 87198.

It is an arithmetic number, because the mean of its divisors is an integer number (47764080).

Almost surely, 2^630564221 is an apocalyptic number.

It is an amenable number.

630564221 is a deficient number, since it is larger than the sum of its proper divisors (133661059).

630564221 is a wasteful number, since it uses less digits than its factorization.

630564221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 630564221 is about 25111.0378319973. The cubic root of 630564221 is about 857.5177299442.

The spelling of 630564221 in words is "six hundred thirty million, five hundred sixty-four thousand, two hundred twenty-one".