448506661 has 2 divisors, whose sum is σ = 448506662. Its totient is φ = 448506660.

The previous prime is 448506649. The next prime is 448506673. The reversal of 448506661 is 166605844.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (448506649) and next prime (448506673).

It can be written as a sum of positive squares in only one way, i.e., 422302500 + 26204161 = 20550^2 + 5119^2 .

It is a cyclic number.

It is not a de Polignac number, because 448506661 - 2¹¹ = 448504613 is a prime.

It is a super-2 number, since 2×448506661² = 402316449922737842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448506691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224253330 + 224253331.

It is an arithmetic number, because the mean of its divisors is an integer number (224253331).

Almost surely, 2^448506661 is an apocalyptic number.

It is an amenable number.

448506661 is a deficient number, since it is larger than the sum of its proper divisors (1).

448506661 is an equidigital number, since it uses as much as digits as its factorization.

448506661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 448506661 is about 21177.9758475639. The cubic root of 448506661 is about 765.4608190862.

The spelling of 448506661 in words is "four hundred forty-eight million, five hundred six thousand, six hundred sixty-one".