689743315 has 4 divisors (see below), whose sum is σ = 827691984. Its totient is φ = 551794648.

The previous prime is 689743253. The next prime is 689743321. The reversal of 689743315 is 513347986.

689743315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 689743315 - 2²¹ = 687646163 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68974327 + ... + 68974336.

It is an arithmetic number, because the mean of its divisors is an integer number (206922996).

Almost surely, 2^689743315 is an apocalyptic number.

689743315 is a deficient number, since it is larger than the sum of its proper divisors (137948669).

689743315 is a wasteful number, since it uses less digits than its factorization.

689743315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137948668.

The product of its digits is 544320, while the sum is 46.

The square root of 689743315 is about 26262.9647031709. The cubic root of 689743315 is about 883.5460032221.

The spelling of 689743315 in words is "six hundred eighty-nine million, seven hundred forty-three thousand, three hundred fifteen".