859648 has 40 divisors (see below), whose sum is σ = 1816848. Its totient is φ = 405504.

The previous prime is 859633. The next prime is 859657. The reversal of 859648 is 846958.

859648 = T₂₇ + T₂₈ + ... + T₁₇₂.

It is a self number, because there is not a number n which added to its sum of digits gives 859648.

It is a congruent number.

It is an unprimeable 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, 11740 + ... + 11812.

2⁸⁵⁹⁶⁴⁸ 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 859648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908424).

859648 is an abundant number, since it is smaller than the sum of its proper divisors (957200).

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

859648 is an equidigital number, since it uses as much as digits as its factorization.

859648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 98 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 859648 is about 927.1720444448. The cubic root of 859648 is about 95.0838779055.

The spelling of 859648 in words is "eight hundred fifty-nine thousand, six hundred forty-eight".