609137643 has 8 divisors (see below), whose sum is σ = 825498256. Its totient is φ = 399434400.

The previous prime is 609137629. The next prime is 609137651. The reversal of 609137643 is 346731906.

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

It is not a de Polignac number, because 609137643 - 2⁵ = 609137611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609137443) 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, 1664128 + ... + 1664493.

It is an arithmetic number, because the mean of its divisors is an integer number (103187282).

Almost surely, 2^609137643 is an apocalyptic number.

609137643 is a deficient number, since it is larger than the sum of its proper divisors (216360613).

609137643 is a wasteful number, since it uses less digits than its factorization.

609137643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328685.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 609137643 is about 24680.7139888618. The cubic root of 609137643 is about 847.6927708655.

It can be divided in two parts, 6091 and 37643, that added together give a palindrome (43734).

The spelling of 609137643 in words is "six hundred nine million, one hundred thirty-seven thousand, six hundred forty-three".