689080245 has 48 divisors (see below), whose sum is σ = 1302180480. Its totient is φ = 304801920.

The previous prime is 689080237. The next prime is 689080247. The reversal of 689080245 is 542080986.

It is not a de Polignac number, because 689080245 - 2³ = 689080237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 689080197 and 689080206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689080247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97491 + ... + 104319.

It is an arithmetic number, because the mean of its divisors is an integer number (27128760).

Almost surely, 2^689080245 is an apocalyptic number.

It is an amenable number.

689080245 is a deficient number, since it is larger than the sum of its proper divisors (613100235).

689080245 is a wasteful number, since it uses less digits than its factorization.

689080245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906 (or 6875 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 689080245 is about 26250.3379978240. The cubic root of 689080245 is about 883.2627864232.

The spelling of 689080245 in words is "six hundred eighty-nine million, eighty thousand, two hundred forty-five".