150665 has 4 divisors (see below), whose sum is σ = 180804. Its totient is φ = 120528.

The previous prime is 150659. The next prime is 150697. The reversal of 150665 is 566051.

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 50176 + 100489 = 224^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 150665 - 2⁴ = 150649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 150665.

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 in 3 ways as a sum of consecutive naturals, for example, 15062 + ... + 15071.

It is an arithmetic number, because the mean of its divisors is an integer number (45201).

2¹⁵⁰⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

150665 is a deficient number, since it is larger than the sum of its proper divisors (30139).

150665 is an equidigital number, since it uses as much as digits as its factorization.

150665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30138.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 150665 is about 388.1558965158. The cubic root of 150665 is about 53.2113313719.

The spelling of 150665 in words is "one hundred fifty thousand, six hundred sixty-five".