660470432 has 12 divisors (see below), whose sum is σ = 1300301226. Its totient is φ = 330235200.

The previous prime is 660470399. The next prime is 660470443. The reversal of 660470432 is 234074066.

It can be written as a sum of positive squares in only one way, i.e., 601426576 + 59043856 = 24524^2 + 7684^2 .

It is a super-3 number, since 3×660470432³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 20639701 = 660470432 / (6 + 6 + 0 + 4 + 7 + 0 + 4 + 3 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10319819 + ... + 10319882.

Almost surely, 2^660470432 is an apocalyptic number.

It is an amenable number.

660470432 is a deficient number, since it is larger than the sum of its proper divisors (639830794).

660470432 is a wasteful number, since it uses less digits than its factorization.

660470432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20639711 (or 20639703 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 660470432 is about 25699.6192967911. The cubic root of 660470432 is about 870.8655814761.

The spelling of 660470432 in words is "six hundred sixty million, four hundred seventy thousand, four hundred thirty-two".