630864321 has 8 divisors (see below), whose sum is σ = 852675360. Its totient is φ = 414814752.

The previous prime is 630864301. The next prime is 630864359. The reversal of 630864321 is 123468036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 630864321 - 2⁹ = 630863809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630864301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440111 + ... + 1440548.

It is an arithmetic number, because the mean of its divisors is an integer number (106584420).

Almost surely, 2^630864321 is an apocalyptic number.

It is an amenable number.

630864321 is a deficient number, since it is larger than the sum of its proper divisors (221811039).

630864321 is a wasteful number, since it uses less digits than its factorization.

630864321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880735.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 630864321 is about 25117.0125811172. The cubic root of 630864321 is about 857.6537458318.

The spelling of 630864321 in words is "six hundred thirty million, eight hundred sixty-four thousand, three hundred twenty-one".