1665150065 has 8 divisors (see below), whose sum is σ = 1998524328. Its totient is φ = 1331890560.

The previous prime is 1665150061. The next prime is 1665150077. The reversal of 1665150065 is 5600515661.

1665150065 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 485364961 + 1179785104 = 22031^2 + 34348^2 .

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

It is not a de Polignac number, because 1665150065 - 2² = 1665150061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1665150061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7355 + ... + 58175.

It is an arithmetic number, because the mean of its divisors is an integer number (249815541).

Almost surely, 2^1665150065 is an apocalyptic number.

It is an amenable number.

1665150065 is a deficient number, since it is larger than the sum of its proper divisors (333374263).

1665150065 is an equidigital number, since it uses as much as digits as its factorization.

1665150065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57379.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1665150065 is about 40806.2503178128. The cubic root of 1665150065 is about 1185.2713663387.

The spelling of 1665150065 in words is "one billion, six hundred sixty-five million, one hundred fifty thousand, sixty-five".