678134377 has 32 divisors (see below), whose sum is σ = 757094400. Its totient is φ = 605102400.

The previous prime is 678134309. The next prime is 678134399. The reversal of 678134377 is 773431876.

It is a cyclic number.

It is not a de Polignac number, because 678134377 - 2¹⁵ = 678101609 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678134077) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3213802 + ... + 3214012.

It is an arithmetic number, because the mean of its divisors is an integer number (23659200).

Almost surely, 2^678134377 is an apocalyptic number.

It is an amenable number.

678134377 is a deficient number, since it is larger than the sum of its proper divisors (78960023).

678134377 is a wasteful number, since it uses less digits than its factorization.

678134377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its digits is 592704, while the sum is 46.

The square root of 678134377 is about 26041.0133635387. The cubic root of 678134377 is about 878.5609991693.

The spelling of 678134377 in words is "six hundred seventy-eight million, one hundred thirty-four thousand, three hundred seventy-seven".