665474882 has 4 divisors (see below), whose sum is σ = 998212326. Its totient is φ = 332737440.

The previous prime is 665474881. The next prime is 665474941. The reversal of 665474882 is 288474566.

It is a happy number.

665474882 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., 416119201 + 249355681 = 20399^2 + 15791^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 665474882.

It is not an unprimeable number, because it can be changed into a prime (665474881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166368719 + ... + 166368722.

Almost surely, 2^665474882 is an apocalyptic number.

665474882 is a deficient number, since it is larger than the sum of its proper divisors (332737444).

665474882 is a wasteful number, since it uses less digits than its factorization.

665474882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332737443.

The product of its digits is 2580480, while the sum is 50.

The square root of 665474882 is about 25796.7998402903. The cubic root of 665474882 is about 873.0595943287.

The spelling of 665474882 in words is "six hundred sixty-five million, four hundred seventy-four thousand, eight hundred eighty-two".