678231022 has 16 divisors (see below), whose sum is σ = 1163017440. Its totient is φ = 290586528.

The previous prime is 678231013. The next prime is 678231023. The reversal of 678231022 is 220132876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678231023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84604 + ... + 92272.

It is an arithmetic number, because the mean of its divisors is an integer number (72688590).

Almost surely, 2^678231022 is an apocalyptic number.

678231022 is a deficient number, since it is larger than the sum of its proper divisors (484786418).

678231022 is a wasteful number, since it uses less digits than its factorization.

678231022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13995.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 678231022 is about 26042.8689279810. The cubic root of 678231022 is about 878.6027335203.

Adding to 678231022 its reverse (220132876), we get a palindrome (898363898).

The spelling of 678231022 in words is "six hundred seventy-eight million, two hundred thirty-one thousand, twenty-two".