665943314 has 4 divisors (see below), whose sum is σ = 998914974. Its totient is φ = 332971656.

The previous prime is 665943281. The next prime is 665943323. The reversal of 665943314 is 413349566.

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

It can be written as a sum of positive squares in only one way, i.e., 522351025 + 143592289 = 22855^2 + 11983^2 .

It is a super-2 number, since 2×665943314² = 886960994922605192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166485827 + ... + 166485830.

Almost surely, 2^665943314 is an apocalyptic number.

665943314 is a deficient number, since it is larger than the sum of its proper divisors (332971660).

665943314 is a wasteful number, since it uses less digits than its factorization.

665943314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332971659.

The product of its digits is 233280, while the sum is 41.

The square root of 665943314 is about 25805.8775088157. The cubic root of 665943314 is about 873.2643970151.

The spelling of 665943314 in words is "six hundred sixty-five million, nine hundred forty-three thousand, three hundred fourteen".