250866 has 48 divisors (see below), whose sum is σ = 681408. Its totient is φ = 64800.

The previous prime is 250853. The next prime is 250867. The reversal of 250866 is 668052.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 9.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 250866.

It is not an unprimeable number, because it can be changed into a prime (250867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1296 + ... + 1476.

It is an arithmetic number, because the mean of its divisors is an integer number (14196).

2²⁵⁰⁸⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340704).

250866 is an abundant number, since it is smaller than the sum of its proper divisors (430542).

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

250866 is a wasteful number, since it uses less digits than its factorization.

250866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 250866 is about 500.8652513401. The cubic root of 250866 is about 63.0687081081.

The spelling of 250866 in words is "two hundred fifty thousand, eight hundred sixty-six".