652566 has 8 divisors (see below), whose sum is σ = 1305144. Its totient is φ = 217520.

The previous prime is 652559. The next prime is 652567. The reversal of 652566 is 665256.

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

652566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652567) by changing a digit.

652566 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, 54375 + ... + 54386.

It is an arithmetic number, because the mean of its divisors is an integer number (163143).

2⁶⁵²⁵⁶⁶ is an apocalyptic number.

652566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

652566 is a wasteful number, since it uses less digits than its factorization.

652566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108766.

The product of its digits is 10800, while the sum is 30.

The square root of 652566 is about 807.8155730116. The cubic root of 652566 is about 86.7377490472.

Adding to 652566 its product of digits (10800), we get a palindrome (663366).

The spelling of 652566 in words is "six hundred fifty-two thousand, five hundred sixty-six".