678518352 has 30 divisors (see below), whose sum is σ = 1898909402. Its totient is φ = 226172736.

The previous prime is 678518339. The next prime is 678518363. The reversal of 678518352 is 253815876.

It can be written as a sum of positive squares in only one way, i.e., 639280656 + 39237696 = 25284^2 + 6264^2 .

It is a junction number, because it is equal to n+sod(n) for n = 678518298 and 678518307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2355823 + ... + 2356110.

Almost surely, 2^678518352 is an apocalyptic number.

It is an amenable number.

678518352 is an abundant number, since it is smaller than the sum of its proper divisors (1220391050).

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

678518352 is a wasteful number, since it uses less digits than its factorization.

678518352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711947 (or 4711938 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 678518352 is about 26048.3848251672. The cubic root of 678518352 is about 878.7267882421.

The spelling of 678518352 in words is "six hundred seventy-eight million, five hundred eighteen thousand, three hundred fifty-two".