660549016 has 16 divisors (see below), whose sum is σ = 1238889600. Its totient is φ = 330178464.

The previous prime is 660549013. The next prime is 660549089. The reversal of 660549016 is 610945066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660549013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23346 + ... + 43198.

It is an arithmetic number, because the mean of its divisors is an integer number (77430600).

Almost surely, 2^660549016 is an apocalyptic number.

It is an amenable number.

660549016 is a deficient number, since it is larger than the sum of its proper divisors (578340584).

660549016 is a wasteful number, since it uses less digits than its factorization.

660549016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24018 (or 24014 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 660549016 is about 25701.1481455596. The cubic root of 660549016 is about 870.9001191751.

It can be divided in two parts, 660 and 549016, that added together give a triangular number (549676 = T₁₀₄₈).

The spelling of 660549016 in words is "six hundred sixty million, five hundred forty-nine thousand, sixteen".