677388879 has 16 divisors (see below), whose sum is σ = 1014818400. Its totient is φ = 446516928.

The previous prime is 677388871. The next prime is 677388889. The reversal of 677388879 is 978883776.

It is not a de Polignac number, because 677388879 - 2³ = 677388871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677388871) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 138544 + ... + 143349.

It is an arithmetic number, because the mean of its divisors is an integer number (63426150).

Almost surely, 2^677388879 is an apocalyptic number.

677388879 is a deficient number, since it is larger than the sum of its proper divisors (337429521).

677388879 is a wasteful number, since it uses less digits than its factorization.

677388879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281991 (or 281985 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 677388879 is about 26026.6955067292. The cubic root of 677388879 is about 878.2389363423.

The spelling of 677388879 in words is "six hundred seventy-seven million, three hundred eighty-eight thousand, eight hundred seventy-nine".