678322494 has 24 divisors (see below), whose sum is σ = 1481276160. Its totient is φ = 224326368.

The previous prime is 678322493. The next prime is 678322511. The reversal of 678322494 is 494223876.

678322494 is a `hidden beast` number, since 67 + 83 + 22 + 494 = 666.

678322494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678322493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146079 + ... + 150650.

It is an arithmetic number, because the mean of its divisors is an integer number (61719840).

Almost surely, 2^678322494 is an apocalyptic number.

678322494 is an abundant number, since it is smaller than the sum of its proper divisors (802953666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678322494 is a wasteful number, since it uses less digits than its factorization.

678322494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296864 (or 296861 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 678322494 is about 26044.6250500943. The cubic root of 678322494 is about 878.6422303554.

It can be divided in two parts, 6 and 78322494, that added together give a square (78322500 = 8850²).

The spelling of 678322494 in words is "six hundred seventy-eight million, three hundred twenty-two thousand, four hundred ninety-four".