665313119 has 4 divisors (see below), whose sum is σ = 667902144. Its totient is φ = 662724096.

The previous prime is 665313079. The next prime is 665313133. The reversal of 665313119 is 911313566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 911313566 = 2 ⋅455656783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665313119 is a prime.

It is a super-3 number, since 3×665313119³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665313179) 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, 1294127 + ... + 1294640.

It is an arithmetic number, because the mean of its divisors is an integer number (166975536).

Almost surely, 2^665313119 is an apocalyptic number.

665313119 is a deficient number, since it is larger than the sum of its proper divisors (2589025).

665313119 is a wasteful number, since it uses less digits than its factorization.

665313119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2589024.

The product of its digits is 14580, while the sum is 35.

The square root of 665313119 is about 25793.6643189757. The cubic root of 665313119 is about 872.9888477647.

The spelling of 665313119 in words is "six hundred sixty-five million, three hundred thirteen thousand, one hundred nineteen".