630346753 has 4 divisors (see below), whose sum is σ = 630607428. Its totient is φ = 630086080.

The previous prime is 630346747. The next prime is 630346771. The reversal of 630346753 is 357643036.

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 397723249 + 232623504 = 19943^2 + 15252^2 .

It is a cyclic number.

It is not a de Polignac number, because 630346753 - 2⁵ = 630346721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630346153) 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, 126676 + ... + 131557.

It is an arithmetic number, because the mean of its divisors is an integer number (157651857).

Almost surely, 2^630346753 is an apocalyptic number.

It is an amenable number.

630346753 is a deficient number, since it is larger than the sum of its proper divisors (260675).

630346753 is a wasteful number, since it uses less digits than its factorization.

630346753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260674.

The product of its (nonzero) digits is 136080, while the sum is 37.

The square root of 630346753 is about 25106.7073309106. The cubic root of 630346753 is about 857.4191388192.

Adding to 630346753 its reverse (357643036), we get a palindrome (987989789).

The spelling of 630346753 in words is "six hundred thirty million, three hundred forty-six thousand, seven hundred fifty-three".