544649868 has 72 divisors (see below), whose sum is σ = 1610056448. Its totient is φ = 151992288.

The previous prime is 544649843. The next prime is 544649891. The reversal of 544649868 is 868946445.

544649868 is a `hidden beast` number, since 54 + 46 + 498 + 68 = 666.

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 in 23 ways as a sum of consecutive naturals, for example, 14296 + ... + 35967.

Almost surely, 2^544649868 is an apocalyptic number.

It is an amenable number.

544649868 is an abundant number, since it is smaller than the sum of its proper divisors (1065406580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

544649868 is a wasteful number, since it uses less digits than its factorization.

544649868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50323 (or 50318 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 54.

The square root of 544649868 is about 23337.7348515232. The cubic root of 544649868 is about 816.6559568404.

The spelling of 544649868 in words is "five hundred forty-four million, six hundred forty-nine thousand, eight hundred sixty-eight".