630140057 has 4 divisors (see below), whose sum is σ = 631029540. Its totient is φ = 629250576.

The previous prime is 630140041. The next prime is 630140083. The reversal of 630140057 is 750041036.

630140057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238733401 + 391406656 = 15451^2 + 19784^2 .

It is a cyclic number.

It is not a de Polignac number, because 630140057 - 2⁴ = 630140041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630140087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443678 + ... + 445095.

It is an arithmetic number, because the mean of its divisors is an integer number (157757385).

Almost surely, 2^630140057 is an apocalyptic number.

It is an amenable number.

630140057 is a deficient number, since it is larger than the sum of its proper divisors (889483).

630140057 is an equidigital number, since it uses as much as digits as its factorization.

630140057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889482.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 630140057 is about 25102.5906431986. The cubic root of 630140057 is about 857.3254102589.

The spelling of 630140057 in words is "six hundred thirty million, one hundred forty thousand, fifty-seven".