447296661 has 48 divisors (see below), whose sum is σ = 768768000. Its totient is φ = 254590128.

The previous prime is 447296573. The next prime is 447296677. The reversal of 447296661 is 166692744.

It is not a de Polignac number, because 447296661 - 2¹⁰ = 447295637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447296561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 746440 + ... + 747038.

It is an arithmetic number, because the mean of its divisors is an integer number (16016000).

Almost surely, 2^447296661 is an apocalyptic number.

It is an amenable number.

447296661 is a deficient number, since it is larger than the sum of its proper divisors (321471339).

447296661 is an equidigital number, since it uses as much as digits as its factorization.

447296661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1048 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 447296661 is about 21149.3891401147. The cubic root of 447296661 is about 764.7718350697.

The spelling of 447296661 in words is "four hundred forty-seven million, two hundred ninety-six thousand, six hundred sixty-one".