678107256 has 32 divisors (see below), whose sum is σ = 1707650640. Its totient is φ = 224384768.

The previous prime is 678107231. The next prime is 678107263. The reversal of 678107256 is 652701876.

It is an alternating number because its digits alternate between even and odd.

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 7 ways as a sum of consecutive naturals, for example, 99831 + ... + 106406.

Almost surely, 2^678107256 is an apocalyptic number.

It is an amenable number.

678107256 is an abundant number, since it is smaller than the sum of its proper divisors (1029543384).

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

678107256 is a wasteful number, since it uses less digits than its factorization.

678107256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206383 (or 206379 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 678107256 is about 26040.4926220684. The cubic root of 678107256 is about 878.5492867558.

The spelling of 678107256 in words is "six hundred seventy-eight million, one hundred seven thousand, two hundred fifty-six".