665341 has 4 divisors (see below), whose sum is σ = 674784. Its totient is φ = 655900.

The previous prime is 665311. The next prime is 665351. The reversal of 665341 is 143566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 665341 - 2⁷ = 665213 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4615 + ... + 4756.

It is an arithmetic number, because the mean of its divisors is an integer number (168696).

2⁶⁶⁵³⁴¹ is an apocalyptic number.

It is an amenable number.

665341 is a deficient number, since it is larger than the sum of its proper divisors (9443).

665341 is an equidigital number, since it uses as much as digits as its factorization.

665341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9442.

The product of its digits is 2160, while the sum is 25.

The square root of 665341 is about 815.6843752335. The cubic root of 665341 is about 87.3001042255.

The spelling of 665341 in words is "six hundred sixty-five thousand, three hundred forty-one".