677867 has 4 divisors (see below), whose sum is σ = 679536. Its totient is φ = 676200.

The previous prime is 677857. The next prime is 677891. The reversal of 677867 is 768776.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 677867 - 2¹⁴ = 661483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677827) 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 3 ways as a sum of consecutive naturals, for example, 218 + ... + 1184.

It is an arithmetic number, because the mean of its divisors is an integer number (169884).

2⁶⁷⁷⁸⁶⁷ is an apocalyptic number.

677867 is a deficient number, since it is larger than the sum of its proper divisors (1669).

677867 is an equidigital number, since it uses as much as digits as its factorization.

677867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668.

The product of its digits is 98784, while the sum is 41.

The square root of 677867 is about 823.3267880981. The cubic root of 677867 is about 87.8445516706.

Subtracting 677867 from its reverse (768776), we obtain a palindrome (90909).

The spelling of 677867 in words is "six hundred seventy-seven thousand, eight hundred sixty-seven".