660342650 has 48 divisors (see below), whose sum is σ = 1398178368. Its totient is φ = 229680000.

The previous prime is 660342649. The next prime is 660342653. The reversal of 660342650 is 56243066.

It is not an unprimeable number, because it can be changed into a prime (660342653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13451 + ... + 38750.

It is an arithmetic number, because the mean of its divisors is an integer number (29128716).

Almost surely, 2^660342650 is an apocalyptic number.

660342650 is an abundant number, since it is smaller than the sum of its proper divisors (737835718).

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

660342650 is a wasteful number, since it uses less digits than its factorization.

660342650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52247 (or 52242 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 660342650 is about 25697.1331085785. The cubic root of 660342650 is about 870.8094153872.

The spelling of 660342650 in words is "six hundred sixty million, three hundred forty-two thousand, six hundred fifty".