447664656 has 40 divisors (see below), whose sum is σ = 1172764224. Its totient is φ = 147118720.

The previous prime is 447664649. The next prime is 447664673. The reversal of 447664656 is 656466744.

It is a super-4 number, since 4×447664656⁴ (a number of 36 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62271 + ... + 69086.

Almost surely, 2^447664656 is an apocalyptic number.

It is an amenable number.

447664656 is an abundant number, since it is smaller than the sum of its proper divisors (725099568).

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

447664656 is a wasteful number, since it uses less digits than its factorization.

447664656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131439 (or 131433 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 48.

The square root of 447664656 is about 21158.0872481423. The cubic root of 447664656 is about 764.9815058112.

The spelling of 447664656 in words is "four hundred forty-seven million, six hundred sixty-four thousand, six hundred fifty-six".