659869545 has 16 divisors (see below), whose sum is σ = 1057700160. Its totient is φ = 351294144.

The previous prime is 659869543. The next prime is 659869549. The reversal of 659869545 is 545968956.

It is not a de Polignac number, because 659869545 - 2¹ = 659869543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (659869543) 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 15 ways as a sum of consecutive naturals, for example, 31135 + ... + 47844.

It is an arithmetic number, because the mean of its divisors is an integer number (66106260).

Almost surely, 2^659869545 is an apocalyptic number.

It is an amenable number.

659869545 is a deficient number, since it is larger than the sum of its proper divisors (397830615).

659869545 is a wasteful number, since it uses less digits than its factorization.

659869545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79544.

The product of its digits is 11664000, while the sum is 57.

The square root of 659869545 is about 25687.9260548609. The cubic root of 659869545 is about 870.6014007971.

The spelling of 659869545 in words is "six hundred fifty-nine million, eight hundred sixty-nine thousand, five hundred forty-five".