665210132 has 12 divisors (see below), whose sum is σ = 1183848960. Its totient is φ = 326967576.

The previous prime is 665210123. The next prime is 665210137. The reversal of 665210132 is 231012566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665210137) 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, 1409108 + ... + 1409579.

It is an arithmetic number, because the mean of its divisors is an integer number (98654080).

Almost surely, 2^665210132 is an apocalyptic number.

It is an amenable number.

665210132 is a deficient number, since it is larger than the sum of its proper divisors (518638828).

665210132 is a wasteful number, since it uses less digits than its factorization.

665210132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818750 (or 2818748 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 665210132 is about 25791.6678793753. The cubic root of 665210132 is about 872.9438007338.

Adding to 665210132 its reverse (231012566), we get a palindrome (896222698).

The spelling of 665210132 in words is "six hundred sixty-five million, two hundred ten thousand, one hundred thirty-two".