689356423 has 8 divisors (see below), whose sum is σ = 829301120. Its totient is φ = 559778040.

The previous prime is 689356373. The next prime is 689356427. The reversal of 689356423 is 324653986.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689356423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689356427) 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, 2591433 + ... + 2591698.

It is an arithmetic number, because the mean of its divisors is an integer number (103662640).

Almost surely, 2^689356423 is an apocalyptic number.

689356423 is a deficient number, since it is larger than the sum of its proper divisors (139944697).

689356423 is a wasteful number, since it uses less digits than its factorization.

689356423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5183157.

The product of its digits is 933120, while the sum is 46.

The square root of 689356423 is about 26255.5979364401. The cubic root of 689356423 is about 883.3807722792.

The spelling of 689356423 in words is "six hundred eighty-nine million, three hundred fifty-six thousand, four hundred twenty-three".