447000661 has 2 divisors, whose sum is σ = 447000662. Its totient is φ = 447000660.

The previous prime is 447000643. The next prime is 447000713. The reversal of 447000661 is 166000744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444408561 + 2592100 = 21081^2 + 1610^2 .

It is a cyclic number.

It is not a de Polignac number, because 447000661 - 2²⁷ = 312782933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447001661) by changing a digit.

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 as a sum of consecutive naturals, namely, 223500330 + 223500331.

It is an arithmetic number, because the mean of its divisors is an integer number (223500331).

Almost surely, 2^447000661 is an apocalyptic number.

It is an amenable number.

447000661 is a deficient number, since it is larger than the sum of its proper divisors (1).

447000661 is an equidigital number, since it uses as much as digits as its factorization.

447000661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 447000661 is about 21142.3901439738. The cubic root of 447000661 is about 764.6031011059.

The spelling of 447000661 in words is "four hundred forty-seven million, six hundred sixty-one", and thus it is an aban number.