545564673 has 16 divisors (see below), whose sum is σ = 825442560. Its totient is φ = 355970448.

The previous prime is 545564671. The next prime is 545564687. The reversal of 545564673 is 376465545.

545564673 is a `hidden beast` number, since 54 + 556 + 46 + 7 + 3 = 666.

It is not a de Polignac number, because 545564673 - 2¹ = 545564671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545564671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213690 + ... + 216227.

It is an arithmetic number, because the mean of its divisors is an integer number (51590160).

Almost surely, 2^545564673 is an apocalyptic number.

It is an amenable number.

545564673 is a deficient number, since it is larger than the sum of its proper divisors (279877887).

545564673 is a wasteful number, since it uses less digits than its factorization.

545564673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429973 (or 429967 counting only the distinct ones).

The product of its digits is 1512000, while the sum is 45.

The square root of 545564673 is about 23357.3258957441. The cubic root of 545564673 is about 817.1129250785.

The spelling of 545564673 in words is "five hundred forty-five million, five hundred sixty-four thousand, six hundred seventy-three".