545778568 has 8 divisors (see below), whose sum is σ = 1023334830. Its totient is φ = 272889280.

The previous prime is 545778559. The next prime is 545778589. The reversal of 545778568 is 865877545.

It can be written as a sum of positive squares in only one way, i.e., 314069284 + 231709284 = 17722^2 + 15222^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34111153 + ... + 34111168.

Almost surely, 2^545778568 is an apocalyptic number.

It is an amenable number.

545778568 is a deficient number, since it is larger than the sum of its proper divisors (477556262).

545778568 is a wasteful number, since it uses less digits than its factorization.

545778568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68222327 (or 68222323 counting only the distinct ones).

The product of its digits is 9408000, while the sum is 55.

The square root of 545778568 is about 23361.9042032108. The cubic root of 545778568 is about 817.2196973469.

The spelling of 545778568 in words is "five hundred forty-five million, seven hundred seventy-eight thousand, five hundred sixty-eight".