664342284 has 48 divisors (see below), whose sum is σ = 1578321920. Its totient is φ = 217451520.

The previous prime is 664342253. The next prime is 664342291. The reversal of 664342284 is 482243466.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181149 + ... + 184779.

Almost surely, 2^664342284 is an apocalyptic number.

It is an amenable number.

664342284 is an abundant number, since it is smaller than the sum of its proper divisors (913979636).

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

664342284 is a wasteful number, since it uses less digits than its factorization.

664342284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910 (or 3908 counting only the distinct ones).

The product of its digits is 221184, while the sum is 39.

The square root of 664342284 is about 25774.8381954184. The cubic root of 664342284 is about 872.5640148651.

The spelling of 664342284 in words is "six hundred sixty-four million, three hundred forty-two thousand, two hundred eighty-four".