660604842 has 32 divisors (see below), whose sum is σ = 1482557760. Its totient is φ = 218019600.

The previous prime is 660604837. The next prime is 660604871. The reversal of 660604842 is 248406066.

It is a happy number.

660604842 is a `hidden beast` number, since 6 + 6 + 0 + 604 + 8 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 660604797 and 660604806.

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 15 ways as a sum of consecutive naturals, for example, 55108 + ... + 66015.

It is an arithmetic number, because the mean of its divisors is an integer number (46329930).

Almost surely, 2^660604842 is an apocalyptic number.

660604842 is an abundant number, since it is smaller than the sum of its proper divisors (821952918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660604842 is a wasteful number, since it uses less digits than its factorization.

660604842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121235 (or 121229 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 660604842 is about 25702.2341830433. The cubic root of 660604842 is about 870.9246530599.

The spelling of 660604842 in words is "six hundred sixty million, six hundred four thousand, eight hundred forty-two".