689896678 has 8 divisors (see below), whose sum is σ = 1044892368. Its totient is φ = 341599224.

The previous prime is 689896657. The next prime is 689896679. The reversal of 689896678 is 876698986.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689896679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674301 + ... + 1674712.

It is an arithmetic number, because the mean of its divisors is an integer number (130611546).

Almost surely, 2^689896678 is an apocalyptic number.

689896678 is a deficient number, since it is larger than the sum of its proper divisors (354995690).

689896678 is a wasteful number, since it uses less digits than its factorization.

689896678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349118.

The product of its digits is 62705664, while the sum is 67.

The square root of 689896678 is about 26265.8842988391. The cubic root of 689896678 is about 883.6114832449.

The spelling of 689896678 in words is "six hundred eighty-nine million, eight hundred ninety-six thousand, six hundred seventy-eight".