665771114 has 8 divisors (see below), whose sum is σ = 998766180. Its totient is φ = 332849056.

The previous prime is 665771111. The next prime is 665771147. The reversal of 665771114 is 411177566.

It can be written as a sum of positive squares in 2 ways, for example, as 526932025 + 138839089 = 22955^2 + 11783^2 .

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

It is not an unprimeable number, because it can be changed into a prime (665771111) 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, 26222 + ... + 44934.

Almost surely, 2^665771114 is an apocalyptic number.

665771114 is a deficient number, since it is larger than the sum of its proper divisors (332995066).

665771114 is a wasteful number, since it uses less digits than its factorization.

665771114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36504.

The product of its digits is 35280, while the sum is 38.

The square root of 665771114 is about 25802.5408438781. The cubic root of 665771114 is about 873.1891207920.

The spelling of 665771114 in words is "six hundred sixty-five million, seven hundred seventy-one thousand, one hundred fourteen".