6693609 has 16 divisors (see below), whose sum is σ = 9777600. Its totient is φ = 4047936.

The previous prime is 6693607. The next prime is 6693611. The reversal of 6693609 is 9063966.

It is an interprime number because it is at equal distance from previous prime (6693607) and next prime (6693611).

It is not a de Polignac number, because 6693609 - 2¹ = 6693607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

6693609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6693607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 847 + ... + 3755.

It is an arithmetic number, because the mean of its divisors is an integer number (611100).

Almost surely, 2^6693609 is an apocalyptic number.

It is an amenable number.

6693609 is a deficient number, since it is larger than the sum of its proper divisors (3083991).

6693609 is a wasteful number, since it uses less digits than its factorization.

6693609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 6693609 is about 2587.2009972169. The cubic root of 6693609 is about 188.4604020607.

It can be divided in two parts, 669 and 3609, that added together give a triangular number (4278 = T₉₂).

The spelling of 6693609 in words is "six million, six hundred ninety-three thousand, six hundred nine".