630858 has 8 divisors (see below), whose sum is σ = 1261728. Its totient is φ = 210284.

The previous prime is 630841. The next prime is 630863. The reversal of 630858 is 858036.

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

630858 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

630858 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 52566 + ... + 52577.

It is an arithmetic number, because the mean of its divisors is an integer number (157716).

2⁶³⁰⁸⁵⁸ is an apocalyptic number.

630858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630858 is a wasteful number, since it uses less digits than its factorization.

630858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105148.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 630858 is about 794.2656986173. The cubic root of 630858 is about 85.7650881377.

The spelling of 630858 in words is "six hundred thirty thousand, eight hundred fifty-eight".