665540114 has 4 divisors (see below), whose sum is σ = 998310174. Its totient is φ = 332770056.

The previous prime is 665540093. The next prime is 665540137. The reversal of 665540114 is 411045566.

665540114 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 653058025 + 12482089 = 25555^2 + 3533^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166385027 + ... + 166385030.

Almost surely, 2^665540114 is an apocalyptic number.

665540114 is a deficient number, since it is larger than the sum of its proper divisors (332770060).

665540114 is a wasteful number, since it uses less digits than its factorization.

665540114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332770059.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 665540114 is about 25798.0641521801. The cubic root of 665540114 is about 873.0881201049.

The spelling of 665540114 in words is "six hundred sixty-five million, five hundred forty thousand, one hundred fourteen".