678782254 has 4 divisors (see below), whose sum is σ = 1018173384. Its totient is φ = 339391126.

The previous prime is 678782191. The next prime is 678782267. The reversal of 678782254 is 452287876.

678782254 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 = 678782198 and 678782207.

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, 169695562 + ... + 169695565.

It is an arithmetic number, because the mean of its divisors is an integer number (254543346).

Almost surely, 2^678782254 is an apocalyptic number.

678782254 is a deficient number, since it is larger than the sum of its proper divisors (339391130).

678782254 is a wasteful number, since it uses less digits than its factorization.

678782254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339391129.

The product of its digits is 1505280, while the sum is 49.

The square root of 678782254 is about 26053.4499442972. The cubic root of 678782254 is about 878.8406970740.

It can be divided in two parts, 6787822 and 54, that added together give a palindrome (6787876).

The spelling of 678782254 in words is "six hundred seventy-eight million, seven hundred eighty-two thousand, two hundred fifty-four".