866248 has 32 divisors (see below), whose sum is σ = 1764000. Its totient is φ = 397440.

The previous prime is 866231. The next prime is 866279. The reversal of 866248 is 842668.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6163 + ... + 6301.

It is an arithmetic number, because the mean of its divisors is an integer number (55125).

2⁸⁶⁶²⁴⁸ is an apocalyptic number.

It is an amenable number.

866248 is an abundant number, since it is smaller than the sum of its proper divisors (897752).

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

866248 is a wasteful number, since it uses less digits than its factorization.

866248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 201 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 866248 is about 930.7244490181. The cubic root of 866248 is about 95.3265952280.

It can be divided in two parts, 8 and 66248, that multiplied together give a square (529984 = 728²).

The spelling of 866248 in words is "eight hundred sixty-six thousand, two hundred forty-eight".