545643617 has 8 divisors (see below), whose sum is σ = 566169600. Its totient is φ = 525300480.

The previous prime is 545643601. The next prime is 545643661. The reversal of 545643617 is 716346545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545643617 - 2⁴ = 545643601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545643667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39617 + ... + 51582.

It is an arithmetic number, because the mean of its divisors is an integer number (70771200).

Almost surely, 2^545643617 is an apocalyptic number.

It is an amenable number.

545643617 is a deficient number, since it is larger than the sum of its proper divisors (20525983).

545643617 is a wasteful number, since it uses less digits than its factorization.

545643617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91423.

The product of its digits is 302400, while the sum is 41.

The square root of 545643617 is about 23359.0157540937. The cubic root of 545643617 is about 817.1523356531.

The spelling of 545643617 in words is "five hundred forty-five million, six hundred forty-three thousand, six hundred seventeen".