630323791 has 8 divisors (see below), whose sum is σ = 646027200. Its totient is φ = 614636160.

The previous prime is 630323779. The next prime is 630323819. The reversal of 630323791 is 197323036.

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

It is a cyclic number.

It is not a de Polignac number, because 630323791 - 2¹¹ = 630321743 is a prime.

It is a super-2 number, since 2×630323791² = 794616163001223362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630323591) 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 7 ways as a sum of consecutive naturals, for example, 152490 + ... + 156568.

It is an arithmetic number, because the mean of its divisors is an integer number (80753400).

Almost surely, 2^630323791 is an apocalyptic number.

630323791 is a deficient number, since it is larger than the sum of its proper divisors (15703409).

630323791 is a wasteful number, since it uses less digits than its factorization.

630323791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 630323791 is about 25106.2500385860. The cubic root of 630323791 is about 857.4087274611.

The spelling of 630323791 in words is "six hundred thirty million, three hundred twenty-three thousand, seven hundred ninety-one".