689900854 has 4 divisors (see below), whose sum is σ = 1034851284. Its totient is φ = 344950426.

The previous prime is 689900837. The next prime is 689900863. The reversal of 689900854 is 458009986.

It is a happy number.

689900854 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 junction number, because it is equal to n+sod(n) for n = 689900798 and 689900807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172475212 + ... + 172475215.

It is an arithmetic number, because the mean of its divisors is an integer number (258712821).

Almost surely, 2^689900854 is an apocalyptic number.

689900854 is a deficient number, since it is larger than the sum of its proper divisors (344950430).

689900854 is a wasteful number, since it uses less digits than its factorization.

689900854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344950429.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 689900854 is about 26265.9637934723. The cubic root of 689900854 is about 883.6132660984.

The spelling of 689900854 in words is "six hundred eighty-nine million, nine hundred thousand, eight hundred fifty-four".