201568 has 12 divisors (see below), whose sum is σ = 396900. Its totient is φ = 100768.

The previous prime is 201557. The next prime is 201577. The reversal of 201568 is 865102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3118 + ... + 3181.

It is an arithmetic number, because the mean of its divisors is an integer number (33075).

2²⁰¹⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

201568 is a deficient number, since it is larger than the sum of its proper divisors (195332).

201568 is an equidigital number, since it uses as much as digits as its factorization.

201568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6309 (or 6301 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 201568 is about 448.9632501664. The cubic root of 201568 is about 58.6327857630.

It can be divided in two parts, 20156 and 8, that added together give a square (20164 = 142²).

The spelling of 201568 in words is "two hundred one thousand, five hundred sixty-eight".