447778068 has 12 divisors (see below), whose sum is σ = 1044815520. Its totient is φ = 149259352.

The previous prime is 447778013. The next prime is 447778069. The reversal of 447778068 is 860877744.

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

It is a self number, because there is not a number n which added to its sum of digits gives 447778068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447778069) 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, 18657408 + ... + 18657431.

It is an arithmetic number, because the mean of its divisors is an integer number (87067960).

Almost surely, 2^447778068 is an apocalyptic number.

It is an amenable number.

447778068 is an abundant number, since it is smaller than the sum of its proper divisors (597037452).

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

447778068 is a wasteful number, since it uses less digits than its factorization.

447778068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37314846 (or 37314844 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 51.

The square root of 447778068 is about 21160.7671883606. The cubic root of 447778068 is about 765.0461008571.

The spelling of 447778068 in words is "four hundred forty-seven million, seven hundred seventy-eight thousand, sixty-eight".