689731417 has 8 divisors (see below), whose sum is σ = 711305280. Its totient is φ = 668487120.

The previous prime is 689731409. The next prime is 689731421. The reversal of 689731417 is 714137986.

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 689731417 - 2³ = 689731409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689731487) 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, 78138 + ... + 86515.

It is an arithmetic number, because the mean of its divisors is an integer number (88913160).

Almost surely, 2^689731417 is an apocalyptic number.

It is an amenable number.

689731417 is a deficient number, since it is larger than the sum of its proper divisors (21573863).

689731417 is a wasteful number, since it uses less digits than its factorization.

689731417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164783.

The product of its digits is 254016, while the sum is 46.

The square root of 689731417 is about 26262.7381854977. The cubic root of 689731417 is about 883.5409228342.

The spelling of 689731417 in words is "six hundred eighty-nine million, seven hundred thirty-one thousand, four hundred seventeen".