447741666 has 12 divisors (see below), whose sum is σ = 970106982. Its totient is φ = 149247216.

The previous prime is 447741629. The next prime is 447741673. The reversal of 447741666 is 666147744.

It can be written as a sum of positive squares in only one way, i.e., 379431441 + 68310225 = 19479^2 + 8265^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12437251 + ... + 12437286.

Almost surely, 2^447741666 is an apocalyptic number.

447741666 is an abundant number, since it is smaller than the sum of its proper divisors (522365316).

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

447741666 is a wasteful number, since it uses less digits than its factorization.

447741666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24874545 (or 24874542 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 447741666 is about 21159.9070413837. The cubic root of 447741666 is about 765.0253688883.

The spelling of 447741666 in words is "four hundred forty-seven million, seven hundred forty-one thousand, six hundred sixty-six".