630879 has 8 divisors (see below), whose sum is σ = 849072. Its totient is φ = 416640.

The previous prime is 630871. The next prime is 630893. The reversal of 630879 is 978036.

It is a happy number.

630879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 630879 - 2³ = 630871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630871) 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, 592 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (106134).

2⁶³⁰⁸⁷⁹ is an apocalyptic number.

630879 is a deficient number, since it is larger than the sum of its proper divisors (218193).

630879 is a wasteful number, since it uses less digits than its factorization.

630879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 630879 is about 794.2789182649. The cubic root of 630879 is about 85.7660397765.

The spelling of 630879 in words is "six hundred thirty thousand, eight hundred seventy-nine".