678208012 has 12 divisors (see below), whose sum is σ = 1191959496. Its totient is φ = 337648160.

The previous prime is 678207977. The next prime is 678208093. The reversal of 678208012 is 210802876.

It is a super-2 number, since 2×678208012² = 919932215081984288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362914 + ... + 364777.

It is an arithmetic number, because the mean of its divisors is an integer number (99329958).

Almost surely, 2^678208012 is an apocalyptic number.

It is an amenable number.

678208012 is a deficient number, since it is larger than the sum of its proper divisors (513751484).

678208012 is a wasteful number, since it uses less digits than its factorization.

678208012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727928 (or 727926 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 678208012 is about 26042.4271526292. The cubic root of 678208012 is about 878.5927974381.

The spelling of 678208012 in words is "six hundred seventy-eight million, two hundred eight thousand, twelve".