447516663 has 32 divisors (see below), whose sum is σ = 659484672. Its totient is φ = 267688800.

The previous prime is 447516659. The next prime is 447516689. The reversal of 447516663 is 366615744.

It is not a de Polignac number, because 447516663 - 2² = 447516659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447516263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1457556 + ... + 1457862.

It is an arithmetic number, because the mean of its divisors is an integer number (20608896).

Almost surely, 2^447516663 is an apocalyptic number.

447516663 is a deficient number, since it is larger than the sum of its proper divisors (211968009).

447516663 is a wasteful number, since it uses less digits than its factorization.

447516663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755.

The product of its digits is 362880, while the sum is 42.

The square root of 447516663 is about 21154.5896438574. The cubic root of 447516663 is about 764.8971983694.

The spelling of 447516663 in words is "four hundred forty-seven million, five hundred sixteen thousand, six hundred sixty-three".