693609 has 8 divisors (see below), whose sum is σ = 1056960. Its totient is φ = 396336.

The previous prime is 693607. The next prime is 693619. The reversal of 693609 is 906396.

693609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 693609 - 2¹ = 693607 is a prime.

693609 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 693609.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 693609.

It is not an unprimeable number, because it can be changed into a prime (693601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16494 + ... + 16535.

It is an arithmetic number, because the mean of its divisors is an integer number (132120).

2⁶⁹³⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

693609 is a deficient number, since it is larger than the sum of its proper divisors (363351).

693609 is a wasteful number, since it uses less digits than its factorization.

693609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33039.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 693609 is about 832.8319158150. The cubic root of 693609 is about 88.5193548271.

The spelling of 693609 in words is "six hundred ninety-three thousand, six hundred nine".