447621564697 has 2 divisors, whose sum is σ = 447621564698. Its totient is φ = 447621564696.

The previous prime is 447621564601. The next prime is 447621564727. The reversal of 447621564697 is 796465126744.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250251063001 + 197370501696 = 500251^2 + 444264^2 .

It is a cyclic number.

It is not a de Polignac number, because 447621564697 - 2⁷ = 447621564569 is a prime.

It is not a weakly prime, because it can be changed into another prime (447621564497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223810782348 + 223810782349.

It is an arithmetic number, because the mean of its divisors is an integer number (223810782349).

Almost surely, 2^447621564697 is an apocalyptic number.

It is an amenable number.

447621564697 is a deficient number, since it is larger than the sum of its proper divisors (1).

447621564697 is an equidigital number, since it uses as much as digits as its factorization.

447621564697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 61.

The spelling of 447621564697 in words is "four hundred forty-seven billion, six hundred twenty-one million, five hundred sixty-four thousand, six hundred ninety-seven".