447648668 has 12 divisors (see below), whose sum is σ = 785205792. Its totient is φ = 223304160.

The previous prime is 447648667. The next prime is 447648679. The reversal of 447648668 is 866846744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447648661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128105 + ... + 131552.

It is an arithmetic number, because the mean of its divisors is an integer number (65433816).

Almost surely, 2^447648668 is an apocalyptic number.

It is an amenable number.

447648668 is a deficient number, since it is larger than the sum of its proper divisors (337557124).

447648668 is a wasteful number, since it uses less digits than its factorization.

447648668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260092 (or 260090 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 53.

The square root of 447648668 is about 21157.7094223359. The cubic root of 447648668 is about 764.9723987934.

The spelling of 447648668 in words is "four hundred forty-seven million, six hundred forty-eight thousand, six hundred sixty-eight".