858648 has 64 divisors (see below), whose sum is σ = 2592000. Its totient is φ = 231552.

The previous prime is 858631. The next prime is 858673. The reversal of 858648 is 846858.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 858648.

It is an unprimeable number.

858648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3058 + ... + 3326.

It is an arithmetic number, because the mean of its divisors is an integer number (40500).

2⁸⁵⁸⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296000).

858648 is an abundant number, since it is smaller than the sum of its proper divisors (1733352).

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

858648 is a wasteful number, since it uses less digits than its factorization.

858648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 300 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 858648 is about 926.6326132832. The cubic root of 858648 is about 95.0469942930.

The spelling of 858648 in words is "eight hundred fifty-eight thousand, six hundred forty-eight".