689339254 has 4 divisors (see below), whose sum is σ = 1034008884. Its totient is φ = 344669626.

The previous prime is 689339249. The next prime is 689339317. The reversal of 689339254 is 452933986.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 689339198 and 689339207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172334812 + ... + 172334815.

It is an arithmetic number, because the mean of its divisors is an integer number (258502221).

Almost surely, 2^689339254 is an apocalyptic number.

689339254 is a deficient number, since it is larger than the sum of its proper divisors (344669630).

689339254 is a wasteful number, since it uses less digits than its factorization.

689339254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344669629.

The product of its digits is 1399680, while the sum is 49.

The square root of 689339254 is about 26255.2709755584. The cubic root of 689339254 is about 883.3734384386.

It can be divided in two parts, 68933 and 9254, that added together give a palindrome (78187).

The spelling of 689339254 in words is "six hundred eighty-nine million, three hundred thirty-nine thousand, two hundred fifty-four".