665027 has 4 divisors (see below), whose sum is σ = 725496. Its totient is φ = 604560.

The previous prime is 665017. The next prime is 665029. The reversal of 665027 is 720566.

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

It is not a de Polignac number, because 665027 - 2⁴ = 665011 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 664987 and 665005.

It is not an unprimeable number, because it can be changed into a prime (665029) 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, 30218 + ... + 30239.

It is an arithmetic number, because the mean of its divisors is an integer number (181374).

2⁶⁶⁵⁰²⁷ is an apocalyptic number.

665027 is a deficient number, since it is larger than the sum of its proper divisors (60469).

665027 is a wasteful number, since it uses less digits than its factorization.

665027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60468.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 665027 is about 815.4918761091. The cubic root of 665027 is about 87.2863686392.

The spelling of 665027 in words is "six hundred sixty-five thousand, twenty-seven".