660199617 has 24 divisors (see below), whose sum is σ = 1188932160. Its totient is φ = 342960480.

The previous prime is 660199577. The next prime is 660199619. The reversal of 660199617 is 716991066.

660199617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660199617 - 2⁷ = 660199489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660199619) 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, 475642 + ... + 477027.

It is an arithmetic number, because the mean of its divisors is an integer number (49538840).

Almost surely, 2^660199617 is an apocalyptic number.

It is an amenable number.

660199617 is a deficient number, since it is larger than the sum of its proper divisors (528732543).

660199617 is a wasteful number, since it uses less digits than its factorization.

660199617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952693 (or 952690 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 660199617 is about 25694.3499042105. The cubic root of 660199617 is about 870.7465371844.

The spelling of 660199617 in words is "six hundred sixty million, one hundred ninety-nine thousand, six hundred seventeen".