252666 has 16 divisors (see below), whose sum is σ = 561600. Its totient is φ = 84204.

The previous prime is 252641. The next prime is 252667. The reversal of 252666 is 666252.

It is a Harshad number since it is a multiple of its sum of digits (27).

252666 is a modest number, since divided by 666 gives 252 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 252666.

It is not an unprimeable number, because it can be changed into a prime (252667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2286 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (35100).

2²⁵²⁶⁶⁶ is an apocalyptic number.

252666 is an abundant number, since it is smaller than the sum of its proper divisors (308934).

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

252666 is a wasteful number, since it uses less digits than its factorization.

252666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4690 (or 4684 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 252666 is about 502.6589300908. The cubic root of 252666 is about 63.2191911489.

The spelling of 252666 in words is "two hundred fifty-two thousand, six hundred sixty-six".