630494353 has 8 divisors (see below), whose sum is σ = 641433896. Its totient is φ = 619574400.

The previous prime is 630494341. The next prime is 630494387. The reversal of 630494353 is 353494036.

It can be written as a sum of positive squares in 4 ways, for example, as 26956864 + 603537489 = 5192^2 + 24567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630494353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630494303) 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, 69733 + ... + 78253.

It is an arithmetic number, because the mean of its divisors is an integer number (80179237).

Almost surely, 2^630494353 is an apocalyptic number.

It is an amenable number.

630494353 is a deficient number, since it is larger than the sum of its proper divisors (10939543).

630494353 is a wasteful number, since it uses less digits than its factorization.

630494353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9795.

The product of its (nonzero) digits is 116640, while the sum is 37.

The square root of 630494353 is about 25109.6466124078. The cubic root of 630494353 is about 857.4860571133.

The spelling of 630494353 in words is "six hundred thirty million, four hundred ninety-four thousand, three hundred fifty-three".