873454561 has 4 divisors (see below), whose sum is σ = 998233792. Its totient is φ = 748675332.

The previous prime is 873454541. The next prime is 873454579. The reversal of 873454561 is 165454378.

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 a cyclic number.

It is not a de Polignac number, because 873454561 - 2⁷ = 873454433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (873454531) 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 in 3 ways as a sum of consecutive naturals, for example, 62389605 + ... + 62389618.

It is an arithmetic number, because the mean of its divisors is an integer number (249558448).

Almost surely, 2^873454561 is an apocalyptic number.

It is an amenable number.

873454561 is a deficient number, since it is larger than the sum of its proper divisors (124779231).

873454561 is a wasteful number, since it uses less digits than its factorization.

873454561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124779230.

The product of its digits is 403200, while the sum is 43.

The square root of 873454561 is about 29554.2646837982. The cubic root of 873454561 is about 955.9021512599.

The spelling of 873454561 in words is "eight hundred seventy-three million, four hundred fifty-four thousand, five hundred sixty-one".