665014120 has 16 divisors (see below), whose sum is σ = 1496281860. Its totient is φ = 266005632.

The previous prime is 665014087. The next prime is 665014127. The reversal of 665014120 is 21410566.

It can be written as a sum of positive squares in 2 ways, for example, as 623101444 + 41912676 = 24962^2 + 6474^2 .

It is not an unprimeable number, because it can be changed into a prime (665014127) 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, 8312637 + ... + 8312716.

Almost surely, 2^665014120 is an apocalyptic number.

It is an amenable number.

665014120 is an abundant number, since it is smaller than the sum of its proper divisors (831267740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665014120 is a wasteful number, since it uses less digits than its factorization.

665014120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16625364 (or 16625360 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 665014120 is about 25787.8676900592. The cubic root of 665014120 is about 872.8580512536.

Adding to 665014120 its reverse (21410566), we get a palindrome (686424686).

The spelling of 665014120 in words is "six hundred sixty-five million, fourteen thousand, one hundred twenty".