545689864 has 16 divisors (see below), whose sum is σ = 1023746220. Its totient is φ = 272690880.

The previous prime is 545689853. The next prime is 545689871. The reversal of 545689864 is 468986545.

It can be written as a sum of positive squares in 2 ways, for example, as 452412900 + 93276964 = 21270^2 + 9658^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439 + ... + 33214.

Almost surely, 2^545689864 is an apocalyptic number.

It is an amenable number.

545689864 is a deficient number, since it is larger than the sum of its proper divisors (478056356).

545689864 is a wasteful number, since it uses less digits than its factorization.

545689864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38520 (or 38516 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 55.

The square root of 545689864 is about 23360.0056506842. The cubic root of 545689864 is about 817.1754214031.

The spelling of 545689864 in words is "five hundred forty-five million, six hundred eighty-nine thousand, eight hundred sixty-four".