660797161 has 8 divisors (see below), whose sum is σ = 687168000. Its totient is φ = 634665360.

The previous prime is 660797141. The next prime is 660797183. The reversal of 660797161 is 161797066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660797161 - 2¹³ = 660788969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660797101) 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, 54111 + ... + 65188.

It is an arithmetic number, because the mean of its divisors is an integer number (85896000).

Almost surely, 2^660797161 is an apocalyptic number.

It is an amenable number.

660797161 is a deficient number, since it is larger than the sum of its proper divisors (26370839).

660797161 is a wasteful number, since it uses less digits than its factorization.

660797161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119519.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 660797161 is about 25705.9752003304. The cubic root of 660797161 is about 871.0091610220.

The spelling of 660797161 in words is "six hundred sixty million, seven hundred ninety-seven thousand, one hundred sixty-one".