630668145 has 16 divisors (see below), whose sum is σ = 1036342080. Its totient is φ = 327265344.

The previous prime is 630668141. The next prime is 630668149. The reversal of 630668145 is 541866036.

It is an interprime number because it is at equal distance from previous prime (630668141) and next prime (630668149).

It is not a de Polignac number, because 630668145 - 2² = 630668141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630668141) 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, 567615 + ... + 568724.

It is an arithmetic number, because the mean of its divisors is an integer number (64771380).

Almost surely, 2^630668145 is an apocalyptic number.

It is an amenable number.

630668145 is a deficient number, since it is larger than the sum of its proper divisors (405673935).

630668145 is a wasteful number, since it uses less digits than its factorization.

630668145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136384.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 630668145 is about 25113.1070359683. The cubic root of 630668145 is about 857.5648368442.

The spelling of 630668145 in words is "six hundred thirty million, six hundred sixty-eight thousand, one hundred forty-five".