678137677 has 16 divisors (see below), whose sum is σ = 782256384. Its totient is φ = 575856000.

The previous prime is 678137627. The next prime is 678137687. The reversal of 678137677 is 776731876.

It is a cyclic number.

It is not a de Polignac number, because 678137677 - 2¹⁹ = 677613389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678137627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393177 + ... + 394897.

It is an arithmetic number, because the mean of its divisors is an integer number (48891024).

Almost surely, 2^678137677 is an apocalyptic number.

It is an amenable number.

678137677 is a deficient number, since it is larger than the sum of its proper divisors (104118707).

678137677 is a wasteful number, since it uses less digits than its factorization.

678137677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220.

The product of its digits is 2074464, while the sum is 52.

The square root of 678137677 is about 26041.0767250511. The cubic root of 678137677 is about 878.5624242784.

The spelling of 678137677 in words is "six hundred seventy-eight million, one hundred thirty-seven thousand, six hundred seventy-seven".