201822065 has 4 divisors (see below), whose sum is σ = 242186484. Its totient is φ = 161457648.

The previous prime is 201822041. The next prime is 201822073. The reversal of 201822065 is 560228102.

201822065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67354849 + 134467216 = 8207^2 + 11596^2 .

It is a cyclic number.

It is not a de Polignac number, because 201822065 - 2⁶ = 201822001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20182202 + ... + 20182211.

It is an arithmetic number, because the mean of its divisors is an integer number (60546621).

Almost surely, 2^201822065 is an apocalyptic number.

It is an amenable number.

201822065 is a deficient number, since it is larger than the sum of its proper divisors (40364419).

201822065 is an equidigital number, since it uses as much as digits as its factorization.

201822065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40364418.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 201822065 is about 14206.4092929917. The cubic root of 201822065 is about 586.5740985074.

The spelling of 201822065 in words is "two hundred one million, eight hundred twenty-two thousand, sixty-five".