630000945 has 24 divisors (see below), whose sum is σ = 1248002496. Its totient is φ = 288000288.

The previous prime is 630000937. The next prime is 630000947. The reversal of 630000945 is 549000036.

It is a happy number.

It is not a de Polignac number, because 630000945 - 2³ = 630000937 is a prime.

630000945 is a modest number, since divided by 945 gives 630 as remainder.

It is not an unprimeable number, because it can be changed into a prime (630000947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999687 + ... + 1000316.

It is an arithmetic number, because the mean of its divisors is an integer number (52000104).

Almost surely, 2^630000945 is an apocalyptic number.

It is an amenable number.

630000945 is a deficient number, since it is larger than the sum of its proper divisors (618001551).

630000945 is a wasteful number, since it uses less digits than its factorization.

630000945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000021 (or 2000018 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 630000945 is about 25099.8196208658. The cubic root of 630000945 is about 857.2623168621.

The spelling of 630000945 in words is "six hundred thirty million, nine hundred forty-five", and thus it is an aban number.