664045132 has 12 divisors (see below), whose sum is σ = 1202150880. Its totient is φ = 320573456.

The previous prime is 664045099. The next prime is 664045133. The reversal of 664045132 is 231540466.

It is a junction number, because it is equal to n+sod(n) for n = 664045094 and 664045103.

It is not an unprimeable number, because it can be changed into a prime (664045133) 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, 2862148 + ... + 2862379.

It is an arithmetic number, because the mean of its divisors is an integer number (100179240).

Almost surely, 2^664045132 is an apocalyptic number.

It is an amenable number.

664045132 is a deficient number, since it is larger than the sum of its proper divisors (538105748).

664045132 is a wasteful number, since it uses less digits than its factorization.

664045132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724560 (or 5724558 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 664045132 is about 25769.0731692081. The cubic root of 664045132 is about 872.4338998044.

Adding to 664045132 its reverse (231540466), we get a palindrome (895585598).

The spelling of 664045132 in words is "six hundred sixty-four million, forty-five thousand, one hundred thirty-two".