665379284 has 12 divisors (see below), whose sum is σ = 1166007444. Its totient is φ = 332234304.

The previous prime is 665379263. The next prime is 665379287. The reversal of 665379284 is 482973566.

It is a happy number.

665379284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 656794384 + 8584900 = 25628^2 + 2930^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665379287) 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, 110537 + ... + 116400.

It is an arithmetic number, because the mean of its divisors is an integer number (97167287).

Almost surely, 2^665379284 is an apocalyptic number.

It is an amenable number.

665379284 is a deficient number, since it is larger than the sum of its proper divisors (500628160).

665379284 is a wasteful number, since it uses less digits than its factorization.

665379284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227674 (or 227672 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 665379284 is about 25794.9468694936. The cubic root of 665379284 is about 873.0177862153.

The spelling of 665379284 in words is "six hundred sixty-five million, three hundred seventy-nine thousand, two hundred eighty-four".