677839 has 6 divisors (see below), whose sum is σ = 692664. Its totient is φ = 663300.

The previous prime is 677827. The next prime is 677857. The reversal of 677839 is 938776.

It is a de Polignac number, because none of the positive numbers 2^k-677839 is a prime.

It is a Duffinian number.

677839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677239) 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 5 ways as a sum of consecutive naturals, for example, 4414 + ... + 4564.

It is an arithmetic number, because the mean of its divisors is an integer number (115444).

2⁶⁷⁷⁸³⁹ is an apocalyptic number.

677839 is a deficient number, since it is larger than the sum of its proper divisors (14825).

677839 is an equidigital number, since it uses as much as digits as its factorization.

677839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 218 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 677839 is about 823.3097837388. The cubic root of 677839 is about 87.8433421505.

The spelling of 677839 in words is "six hundred seventy-seven thousand, eight hundred thirty-nine".