630479 has 4 divisors (see below), whose sum is σ = 667584. Its totient is φ = 593376.

The previous prime is 630473. The next prime is 630481. The reversal of 630479 is 974036.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630479 is a prime.

It is a super-3 number, since 3×630479³ = 751853337160176717, which contains 333 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 (630473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18527 + ... + 18560.

It is an arithmetic number, because the mean of its divisors is an integer number (166896).

2⁶³⁰⁴⁷⁹ is an apocalyptic number.

630479 is a deficient number, since it is larger than the sum of its proper divisors (37105).

630479 is a wasteful number, since it uses less digits than its factorization.

630479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37104.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 630479 is about 794.0270776239. The cubic root of 630479 is about 85.7479096919.

The spelling of 630479 in words is "six hundred thirty thousand, four hundred seventy-nine".