630791 has 8 divisors (see below), whose sum is σ = 729120. Its totient is φ = 534528.

The previous prime is 630737. The next prime is 630797. The reversal of 630791 is 197036.

It is a happy number.

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 630791 - 2¹⁰ = 629767 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 630791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (91140).

2⁶³⁰⁷⁹¹ is an apocalyptic number.

630791 is a deficient number, since it is larger than the sum of its proper divisors (98329).

630791 is an equidigital number, since it uses as much as digits as its factorization.

630791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 630791 is about 794.2235201755. The cubic root of 630791 is about 85.7620518155.

The spelling of 630791 in words is "six hundred thirty thousand, seven hundred ninety-one".