424768561 has 4 divisors (see below), whose sum is σ = 485449792. Its totient is φ = 364087332.

The previous prime is 424768537. The next prime is 424768573. The reversal of 424768561 is 165867424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 424768561 - 2⁷ = 424768433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424768501) 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 in 3 ways as a sum of consecutive naturals, for example, 30340605 + ... + 30340618.

It is an arithmetic number, because the mean of its divisors is an integer number (121362448).

Almost surely, 2^424768561 is an apocalyptic number.

It is an amenable number.

424768561 is a deficient number, since it is larger than the sum of its proper divisors (60681231).

424768561 is an equidigital number, since it uses as much as digits as its factorization.

424768561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60681230.

The product of its digits is 322560, while the sum is 43.

The square root of 424768561 is about 20609.9141434408. The cubic root of 424768561 is about 751.7107974105.

The spelling of 424768561 in words is "four hundred twenty-four million, seven hundred sixty-eight thousand, five hundred sixty-one".