660624068 has 12 divisors (see below), whose sum is σ = 1245022380. Its totient is φ = 304903392.

The previous prime is 660624067. The next prime is 660624077. The reversal of 660624068 is 860426066.

It can be written as a sum of positive squares in 2 ways, for example, as 36024004 + 624600064 = 6002^2 + 24992^2 .

It is not an unprimeable number, because it can be changed into a prime (660624067) 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, 6352103 + ... + 6352206.

It is an arithmetic number, because the mean of its divisors is an integer number (103751865).

Almost surely, 2^660624068 is an apocalyptic number.

It is an amenable number.

660624068 is a deficient number, since it is larger than the sum of its proper divisors (584398312).

660624068 is a wasteful number, since it uses less digits than its factorization.

660624068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12704326 (or 12704324 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 660624068 is about 25702.6081945004. The cubic root of 660624068 is about 870.9331020014.

The spelling of 660624068 in words is "six hundred sixty million, six hundred twenty-four thousand, sixty-eight".