630140140 has 24 divisors (see below), whose sum is σ = 1512336672. Its totient is φ = 216048000.

The previous prime is 630140129. The next prime is 630140141. The reversal of 630140140 is 41041036.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (630140141) 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, 2250361 + ... + 2250640.

It is an arithmetic number, because the mean of its divisors is an integer number (63014028).

Almost surely, 2^630140140 is an apocalyptic number.

It is an amenable number.

630140140 is an abundant number, since it is smaller than the sum of its proper divisors (882196532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630140140 is a wasteful number, since it uses less digits than its factorization.

630140140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501017 (or 4501015 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 630140140 is about 25102.5922964143. The cubic root of 630140140 is about 857.3254479002.

Adding to 630140140 its reverse (41041036), we get a palindrome (671181176).

The spelling of 630140140 in words is "six hundred thirty million, one hundred forty thousand, one hundred forty".