249670 has 8 divisors (see below), whose sum is σ = 449424. Its totient is φ = 99864.

The previous prime is 249659. The next prime is 249671. The reversal of 249670 is 76942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 2¹⁷ + 4 + 6³ + 9³ + 7⁶ + 0 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249671) by changing a digit.

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, 12474 + ... + 12493.

It is an arithmetic number, because the mean of its divisors is an integer number (56178).

2²⁴⁹⁶⁷⁰ is an apocalyptic number.

249670 is a deficient number, since it is larger than the sum of its proper divisors (199754).

249670 is a wasteful number, since it uses less digits than its factorization.

249670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24974.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 249670 is about 499.6698910281. The cubic root of 249670 is about 62.9683220267.

It can be divided in two parts, 249 and 670, that added together give a palindrome (919).

The spelling of 249670 in words is "two hundred forty-nine thousand, six hundred seventy".