660447474197 has 8 divisors (see below), whose sum is σ = 754822950336. Its totient is φ = 566078457312.

The previous prime is 660447474173. The next prime is 660447474301. The reversal of 660447474197 is 791474744066.

It is a happy number.

660447474197 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 a de Polignac number, because none of the positive numbers 2^k-660447474197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660447474107) 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, 1393688 + ... + 1806449.

It is an arithmetic number, because the mean of its divisors is an integer number (94352868792).

Almost surely, 2^660447474197 is an apocalyptic number.

It is an amenable number.

660447474197 is a deficient number, since it is larger than the sum of its proper divisors (94375476139).

660447474197 is a wasteful number, since it uses less digits than its factorization.

660447474197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229627.

The product of its (nonzero) digits is 28449792, while the sum is 59.

The spelling of 660447474197 in words is "six hundred sixty billion, four hundred forty-seven million, four hundred seventy-four thousand, one hundred ninety-seven".