665232032 has 24 divisors (see below), whose sum is σ = 1386716436. Its totient is φ = 313050112.

The previous prime is 665231977. The next prime is 665232037. The reversal of 665232032 is 230232566.

It can be written as a sum of positive squares in 2 ways, for example, as 663371536 + 1860496 = 25756^2 + 1364^2 .

It is a junction number, because it is equal to n+sod(n) for n = 665231986 and 665232004.

It is not an unprimeable number, because it can be changed into a prime (665232037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610883 + ... + 611970.

Almost surely, 2^665232032 is an apocalyptic number.

It is an amenable number.

665232032 is an abundant number, since it is smaller than the sum of its proper divisors (721484404).

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

665232032 is a wasteful number, since it uses less digits than its factorization.

665232032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222880 (or 1222872 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 665232032 is about 25792.0924315962. The cubic root of 665232032 is about 872.9533802930.

Adding to 665232032 its reverse (230232566), we get a palindrome (895464598).

The spelling of 665232032 in words is "six hundred sixty-five million, two hundred thirty-two thousand, thirty-two".