6943609 has 4 divisors (see below), whose sum is σ = 6949120. Its totient is φ = 6938100.

The previous prime is 6943603. The next prime is 6943613. The reversal of 6943609 is 9063496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6943609 - 2⁷ = 6943481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6943603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172 + ... + 3730.

It is an arithmetic number, because the mean of its divisors is an integer number (1737280).

Almost surely, 2^6943609 is an apocalyptic number.

It is an amenable number.

6943609 is a deficient number, since it is larger than the sum of its proper divisors (5511).

6943609 is a wasteful number, since it uses less digits than its factorization.

6943609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 6943609 is about 2635.0728642677. The cubic root of 6943609 is about 190.7780560242.

The spelling of 6943609 in words is "six million, nine hundred forty-three thousand, six hundred nine".