677686 has 8 divisors (see below), whose sum is σ = 1023120. Its totient is φ = 336648.

The previous prime is 677683. The next prime is 677687. The reversal of 677686 is 686776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677681) 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 3 ways as a sum of consecutive naturals, for example, 681 + ... + 1348.

It is an arithmetic number, because the mean of its divisors is an integer number (127890).

2⁶⁷⁷⁶⁸⁶ is an apocalyptic number.

677686 is a deficient number, since it is larger than the sum of its proper divisors (345434).

677686 is a wasteful number, since it uses less digits than its factorization.

677686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198.

The product of its digits is 84672, while the sum is 40.

The square root of 677686 is about 823.2168608575. The cubic root of 677686 is about 87.8367323987.

The spelling of 677686 in words is "six hundred seventy-seven thousand, six hundred eighty-six".