678134286 has 12 divisors (see below), whose sum is σ = 1469290992. Its totient is φ = 226044756.

The previous prime is 678134273. The next prime is 678134293. The reversal of 678134286 is 682431876.

It is a super-2 number, since 2×678134286² = 919732219697459592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18837046 + ... + 18837081.

It is an arithmetic number, because the mean of its divisors is an integer number (122440916).

Almost surely, 2^678134286 is an apocalyptic number.

678134286 is an abundant number, since it is smaller than the sum of its proper divisors (791156706).

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

678134286 is a wasteful number, since it uses less digits than its factorization.

678134286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37674135 (or 37674132 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 678134286 is about 26041.0116162948. The cubic root of 678134286 is about 878.5609598707.

The spelling of 678134286 in words is "six hundred seventy-eight million, one hundred thirty-four thousand, two hundred eighty-six".