660243532 has 12 divisors (see below), whose sum is σ = 1244305216. Its totient is φ = 304727760.

The previous prime is 660243517. The next prime is 660243581. The reversal of 660243532 is 235342066.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 660243494 and 660243503.

It is an unprimeable number.

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, 6348444 + ... + 6348547.

Almost surely, 2^660243532 is an apocalyptic number.

It is an amenable number.

660243532 is a deficient number, since it is larger than the sum of its proper divisors (584061684).

660243532 is a wasteful number, since it uses less digits than its factorization.

660243532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12697008 (or 12697006 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 660243532 is about 25695.2044553064. The cubic root of 660243532 is about 870.7658434595.

Adding to 660243532 its reverse (235342066), we get a palindrome (895585598).

The spelling of 660243532 in words is "six hundred sixty million, two hundred forty-three thousand, five hundred thirty-two".