689353243 has 8 divisors (see below), whose sum is σ = 694363536. Its totient is φ = 684352800.

The previous prime is 689353211. The next prime is 689353279. The reversal of 689353243 is 342353986.

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 689353243 - 2⁵ = 689353211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 689353243.

It is not an unprimeable number, because it can be changed into a prime (689353283) 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, 190713 + ... + 194293.

It is an arithmetic number, because the mean of its divisors is an integer number (86795442).

Almost surely, 2^689353243 is an apocalyptic number.

689353243 is a deficient number, since it is larger than the sum of its proper divisors (5010293).

689353243 is a wasteful number, since it uses less digits than its factorization.

689353243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925.

The product of its digits is 466560, while the sum is 43.

The square root of 689353243 is about 26255.5373778561. The cubic root of 689353243 is about 883.3794139325.

The spelling of 689353243 in words is "six hundred eighty-nine million, three hundred fifty-three thousand, two hundred forty-three".