201068581 has 8 divisors (see below), whose sum is σ = 229965120. Its totient is φ = 172215168.

The previous prime is 201068563. The next prime is 201068587. The reversal of 201068581 is 185860102.

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

It is a cyclic number.

It is not a de Polignac number, because 201068581 - 2⁷ = 201068453 is a prime.

It is a super-2 number, since 2×201068581² = 80857148530707122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201068587) 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, 76 + ... + 20053.

It is an arithmetic number, because the mean of its divisors is an integer number (28745640).

Almost surely, 2^201068581 is an apocalyptic number.

It is an amenable number.

201068581 is a deficient number, since it is larger than the sum of its proper divisors (28896539).

201068581 is a wasteful number, since it uses less digits than its factorization.

201068581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21563.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 201068581 is about 14179.8653378655. The cubic root of 201068581 is about 585.8432148204.

It can be divided in two parts, 20 and 1068581, that added together give a palindrome (1068601).

The spelling of 201068581 in words is "two hundred one million, sixty-eight thousand, five hundred eighty-one".