660447474198 has 16 divisors (see below), whose sum is σ = 1351613436096. Its totient is φ = 215029410120.

The previous prime is 660447474173. The next prime is 660447474301. The reversal of 660447474198 is 891474744066.

660447474198 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1279936708 + ... + 1279937223.

It is an arithmetic number, because the mean of its divisors is an integer number (84475839756).

Almost surely, 2^660447474198 is an apocalyptic number.

660447474198 is an abundant number, since it is smaller than the sum of its proper divisors (691165961898).

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

660447474198 is a wasteful number, since it uses less digits than its factorization.

660447474198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559873979.

The product of its (nonzero) digits is 32514048, while the sum is 60.

The spelling of 660447474198 in words is "six hundred sixty billion, four hundred forty-seven million, four hundred seventy-four thousand, one hundred ninety-eight".