665314 has 8 divisors (see below), whose sum is σ = 1074780. Its totient is φ = 307056.

The previous prime is 665311. The next prime is 665351. The reversal of 665314 is 413566.

It can be written as a sum of positive squares in 2 ways, for example, as 664225 + 1089 = 815^2 + 33^2 .

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

It is an Ulam number.

It is a plaindrome in base 9 and base 14.

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, 12769 + ... + 12820.

2⁶⁶⁵³¹⁴ is an apocalyptic number.

665314 is a deficient number, since it is larger than the sum of its proper divisors (409466).

665314 is a wasteful number, since it uses less digits than its factorization.

665314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25604.

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

The square root of 665314 is about 815.6678245462. The cubic root of 665314 is about 87.2989233099.

It can be divided in two parts, 665 and 314, that added together give a palindrome (979).

The spelling of 665314 in words is "six hundred sixty-five thousand, three hundred fourteen".