6158609 has 4 divisors (see below), whose sum is σ = 6215220. Its totient is φ = 6102000.

The previous prime is 6158563. The next prime is 6158681. The reversal of 6158609 is 9068516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2560000 + 3598609 = 1600^2 + 1897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6158609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6158689) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28142 + ... + 28359.

It is an arithmetic number, because the mean of its divisors is an integer number (1553805).

Almost surely, 2^6158609 is an apocalyptic number.

It is an amenable number.

6158609 is a deficient number, since it is larger than the sum of its proper divisors (56611).

6158609 is a wasteful number, since it uses less digits than its factorization.

6158609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56610.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 6158609 is about 2481.6544884411. The cubic root of 6158609 is about 183.2993299655.

The spelling of 6158609 in words is "six million, one hundred fifty-eight thousand, six hundred nine".