666356484 has 12 divisors (see below), whose sum is σ = 1554831824. Its totient is φ = 222118824.

The previous prime is 666356479. The next prime is 666356491. The reversal of 666356484 is 484653666.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27764842 + ... + 27764865.

Almost surely, 2^666356484 is an apocalyptic number.

It is an amenable number.

666356484 is an abundant number, since it is smaller than the sum of its proper divisors (888475340).

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

666356484 is a wasteful number, since it uses less digits than its factorization.

666356484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55529714 (or 55529712 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 48.

The square root of 666356484 is about 25813.8816143563. The cubic root of 666356484 is about 873.4449589593. Note that the first 3 decimals are identical.

The spelling of 666356484 in words is "six hundred sixty-six million, three hundred fifty-six thousand, four hundred eighty-four".