447015660 has 384 divisors, whose sum is σ = 1685913600. Its totient is φ = 85847040.

The previous prime is 447015631. The next prime is 447015703. The reversal of 447015660 is 66510744.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3215871 + ... + 3216009.

It is an arithmetic number, because the mean of its divisors is an integer number (4390400).

Almost surely, 2^447015660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 447015660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842956800).

447015660 is an abundant number, since it is smaller than the sum of its proper divisors (1238897940).

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

447015660 is a wasteful number, since it uses less digits than its factorization.

447015660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 447015660 is about 21142.7448549142. The cubic root of 447015660 is about 764.6116530348.

The spelling of 447015660 in words is "four hundred forty-seven million, fifteen thousand, six hundred sixty".