447696640 has 72 divisors (see below), whose sum is σ = 1083303648. Its totient is φ = 177254400.

The previous prime is 447696619. The next prime is 447696653. The reversal of 447696640 is 46696744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127549 + ... + 131011.

It is an arithmetic number, because the mean of its divisors is an integer number (15045884).

Almost surely, 2^447696640 is an apocalyptic number.

447696640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447696640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541651824).

447696640 is an abundant number, since it is smaller than the sum of its proper divisors (635607008).

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

447696640 is a wasteful number, since it uses less digits than its factorization.

447696640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585 (or 3571 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 447696640 is about 21158.8430685612. The cubic root of 447696640 is about 764.9997237529. Note that the first 3 decimals are identical.

The spelling of 447696640 in words is "four hundred forty-seven million, six hundred ninety-six thousand, six hundred forty".