249656 has 16 divisors (see below), whose sum is σ = 510840. Its totient is φ = 113440.

The previous prime is 249647. The next prime is 249659. The reversal of 249656 is 656942.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249659) by changing a digit.

249656 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331 + ... + 1506.

2²⁴⁹⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

249656 is an abundant number, since it is smaller than the sum of its proper divisors (261184).

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

249656 is a wasteful number, since it uses less digits than its factorization.

249656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854 (or 2850 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 249656 is about 499.6558815825. The cubic root of 249656 is about 62.9671450424.

It can be divided in two parts, 2496 and 56, that added together give a palindrome (2552).

The spelling of 249656 in words is "two hundred forty-nine thousand, six hundred fifty-six".