678985352 has 16 divisors (see below), whose sum is σ = 1316997900. Its totient is φ = 327785920.

The previous prime is 678985313. The next prime is 678985367. The reversal of 678985352 is 253589876.

It can be written as a sum of positive squares in 2 ways, for example, as 620707396 + 58277956 = 24914^2 + 7634^2 .

It is a super-2 number, since 2×678985352² = 922042216461127808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 678985294 and 678985303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1463099 + ... + 1463562.

Almost surely, 2^678985352 is an apocalyptic number.

It is an amenable number.

678985352 is a deficient number, since it is larger than the sum of its proper divisors (638012548).

678985352 is a wasteful number, since it uses less digits than its factorization.

678985352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926696 (or 2926692 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 53.

The square root of 678985352 is about 26057.3473707513. The cubic root of 678985352 is about 878.9283407858.

The spelling of 678985352 in words is "six hundred seventy-eight million, nine hundred eighty-five thousand, three hundred fifty-two".