659737849 has 8 divisors (see below), whose sum is σ = 682826760. Its totient is φ = 636671616.

The previous prime is 659737843. The next prime is 659737873. The reversal of 659737849 is 948737956.

It can be written as a sum of positive squares in 4 ways, for example, as 120012025 + 539725824 = 10955^2 + 23232^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 659737849 - 2¹⁷ = 659606777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 659737793 and 659737802.

It is not an unprimeable number, because it can be changed into a prime (659737843) 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 7 ways as a sum of consecutive naturals, for example, 71547 + ... + 80239.

It is an arithmetic number, because the mean of its divisors is an integer number (85353345).

Almost surely, 2^659737849 is an apocalyptic number.

It is an amenable number.

659737849 is a deficient number, since it is larger than the sum of its proper divisors (23088911).

659737849 is a wasteful number, since it uses less digits than its factorization.

659737849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11339.

The product of its digits is 11430720, while the sum is 58.

The square root of 659737849 is about 25685.3625436746. The cubic root of 659737849 is about 870.5434790704.

The spelling of 659737849 in words is "six hundred fifty-nine million, seven hundred thirty-seven thousand, eight hundred forty-nine".