693985867 has 4 divisors (see below), whose sum is σ = 697997520. Its totient is φ = 689974216.

The previous prime is 693985861. The next prime is 693985889. The reversal of 693985867 is 768589396.

693985867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 693985867 - 2²³ = 685597259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693985861) 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, 2005567 + ... + 2005912.

It is an arithmetic number, because the mean of its divisors is an integer number (174499380).

Almost surely, 2^693985867 is an apocalyptic number.

693985867 is a deficient number, since it is larger than the sum of its proper divisors (4011653).

693985867 is a wasteful number, since it uses less digits than its factorization.

693985867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011652.

The product of its digits is 19595520, while the sum is 61.

The square root of 693985867 is about 26343.6115026015. The cubic root of 693985867 is about 885.3538402298.

The spelling of 693985867 in words is "six hundred ninety-three million, nine hundred eighty-five thousand, eight hundred sixty-seven".