689667193 has 8 divisors (see below), whose sum is σ = 694020096. Its totient is φ = 685322400.

The previous prime is 689667157. The next prime is 689667197. The reversal of 689667193 is 391766986.

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

It is a cyclic number.

It is not a de Polignac number, because 689667193 - 2²⁵ = 656112761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689667197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301213 + ... + 303493.

It is an arithmetic number, because the mean of its divisors is an integer number (86752512).

Almost surely, 2^689667193 is an apocalyptic number.

It is an amenable number.

689667193 is a deficient number, since it is larger than the sum of its proper divisors (4352903).

689667193 is a wasteful number, since it uses less digits than its factorization.

689667193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055.

The product of its digits is 2939328, while the sum is 55.

The square root of 689667193 is about 26261.5154360901. The cubic root of 689667193 is about 883.5134984908.

The spelling of 689667193 in words is "six hundred eighty-nine million, six hundred sixty-seven thousand, one hundred ninety-three".