201450665 has 8 divisors (see below), whose sum is σ = 260336328. Its totient is φ = 148763520.

The previous prime is 201450659. The next prime is 201450701. The reversal of 201450665 is 566054102.

It can be written as a sum of positive squares in 4 ways, for example, as 151321 + 201299344 = 389^2 + 14188^2 .

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

It is not a de Polignac number, because 201450665 - 2⁴ = 201450649 is a prime.

It is a Duffinian number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 1549556 + ... + 1549685.

It is an arithmetic number, because the mean of its divisors is an integer number (32542041).

Almost surely, 2^201450665 is an apocalyptic number.

It is an amenable number.

201450665 is a deficient number, since it is larger than the sum of its proper divisors (58885663).

201450665 is a wasteful number, since it uses less digits than its factorization.

201450665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099259.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 201450665 is about 14193.3317089399. The cubic root of 201450665 is about 586.2140662005.

The spelling of 201450665 in words is "two hundred one million, four hundred fifty thousand, six hundred sixty-five".