693442809 has 16 divisors (see below), whose sum is σ = 1062748800. Its totient is φ = 446353488.

The previous prime is 693442793. The next prime is 693442837. The reversal of 693442809 is 908244396.

693442809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 693442809 - 2⁴ = 693442793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (693442859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442029 + ... + 443594.

It is an arithmetic number, because the mean of its divisors is an integer number (66421800).

Almost surely, 2^693442809 is an apocalyptic number.

It is an amenable number.

693442809 is a deficient number, since it is larger than the sum of its proper divisors (369305991).

693442809 is a wasteful number, since it uses less digits than its factorization.

693442809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885661 (or 885655 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 693442809 is about 26333.3022805724. The cubic root of 693442809 is about 885.1228441943.

The spelling of 693442809 in words is "six hundred ninety-three million, four hundred forty-two thousand, eight hundred nine".