630645233 has 8 divisors (see below), whose sum is σ = 634817568. Its totient is φ = 626487264.

The previous prime is 630645199. The next prime is 630645269. The reversal of 630645233 is 332546036.

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

It is a cyclic number.

It is not a de Polignac number, because 630645233 - 2²⁰ = 629596657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630645233.

It is not an unprimeable number, because it can be changed into a prime (630648233) 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, 92810 + ... + 99372.

It is an arithmetic number, because the mean of its divisors is an integer number (79352196).

Almost surely, 2^630645233 is an apocalyptic number.

It is an amenable number.

630645233 is a deficient number, since it is larger than the sum of its proper divisors (4172335).

630645233 is a wasteful number, since it uses less digits than its factorization.

630645233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7183.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 630645233 is about 25112.6508556942. The cubic root of 630645233 is about 857.5544516870.

The spelling of 630645233 in words is "six hundred thirty million, six hundred forty-five thousand, two hundred thirty-three".