660245860 has 24 divisors (see below), whose sum is σ = 1388903040. Its totient is φ = 263643744.

The previous prime is 660245851. The next prime is 660245869. The reversal of 660245860 is 68542066.

660245860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (660245851) and next prime (660245869).

It is not an unprimeable number, because it can be changed into a prime (660245869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16380 + ... + 39859.

It is an arithmetic number, because the mean of its divisors is an integer number (57870960).

Almost surely, 2^660245860 is an apocalyptic number.

It is an amenable number.

660245860 is an abundant number, since it is smaller than the sum of its proper divisors (728657180).

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

660245860 is a wasteful number, since it uses less digits than its factorization.

660245860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56835 (or 56833 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 660245860 is about 25695.2497555482. The cubic root of 660245860 is about 870.7668668902.

The spelling of 660245860 in words is "six hundred sixty million, two hundred forty-five thousand, eight hundred sixty".