660896161 has 8 divisors (see below), whose sum is σ = 682875648. Its totient is φ = 638958000.

The previous prime is 660896153. The next prime is 660896177. The reversal of 660896161 is 161698066.

It is a happy number.

660896161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 660896161 - 2³ = 660896153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660896861) 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, 24051 + ... + 43591.

It is an arithmetic number, because the mean of its divisors is an integer number (85359456).

Almost surely, 2^660896161 is an apocalyptic number.

It is an amenable number.

660896161 is a deficient number, since it is larger than the sum of its proper divisors (21979487).

660896161 is a wasteful number, since it uses less digits than its factorization.

660896161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20663.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 660896161 is about 25707.9007505475. The cubic root of 660896161 is about 871.0526567703.

The spelling of 660896161 in words is "six hundred sixty million, eight hundred ninety-six thousand, one hundred sixty-one".