660674404400 has 60 divisors (see below), whose sum is σ = 1617218803872. Its totient is φ = 259283531520.

The previous prime is 660674404367. The next prime is 660674404421. The reversal of 660674404400 is 4404476066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15560744 + ... + 15603143.

Almost surely, 2^660674404400 is an apocalyptic number.

It is an amenable number.

660674404400 is an abundant number, since it is smaller than the sum of its proper divisors (956544399472).

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

660674404400 is a wasteful number, since it uses less digits than its factorization.

660674404400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31163958 (or 31163947 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 660674404400 in words is "six hundred sixty billion, six hundred seventy-four million, four hundred four thousand, four hundred".