678876122 has 4 divisors (see below), whose sum is σ = 1018314186. Its totient is φ = 339438060.

The previous prime is 678876103. The next prime is 678876179. The reversal of 678876122 is 221678876.

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

It can be written as a sum of positive squares in only one way, i.e., 670343881 + 8532241 = 25891^2 + 2921^2 .

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, 169719029 + ... + 169719032.

Almost surely, 2^678876122 is an apocalyptic number.

678876122 is a deficient number, since it is larger than the sum of its proper divisors (339438064).

678876122 is a wasteful number, since it uses less digits than its factorization.

678876122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339438063.

The product of its digits is 451584, while the sum is 47.

The square root of 678876122 is about 26055.2513325049. The cubic root of 678876122 is about 878.8812064890.

The spelling of 678876122 in words is "six hundred seventy-eight million, eight hundred seventy-six thousand, one hundred twenty-two".