660471242 has 8 divisors (see below), whose sum is σ = 994852800. Its totient is φ = 328853644.

The previous prime is 660471241. The next prime is 660471277. The reversal of 660471242 is 242174066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 660471199 and 660471208.

It is not an unprimeable number, because it can be changed into a prime (660471241) 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, 690392 + ... + 691347.

It is an arithmetic number, because the mean of its divisors is an integer number (124356600).

Almost surely, 2^660471242 is an apocalyptic number.

660471242 is a deficient number, since it is larger than the sum of its proper divisors (334381558).

660471242 is a wasteful number, since it uses less digits than its factorization.

660471242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381980.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 660471242 is about 25699.6350557746. The cubic root of 660471242 is about 870.8659374854.

The spelling of 660471242 in words is "six hundred sixty million, four hundred seventy-one thousand, two hundred forty-two".