677866 has 12 divisors (see below), whose sum is σ = 1182978. Its totient is φ = 290472.

The previous prime is 677857. The next prime is 677891. The reversal of 677866 is 668776.

It can be written as a sum of positive squares in only one way, i.e., 540225 + 137641 = 735^2 + 371^2 .

It is an Ulam number.

It is a nialpdrome in base 7.

It is a zygodrome in base 4 and base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3361 + ... + 3556.

2⁶⁷⁷⁸⁶⁶ is an apocalyptic number.

677866 is a deficient number, since it is larger than the sum of its proper divisors (505112).

677866 is a wasteful number, since it uses less digits than its factorization.

677866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6933 (or 6926 counting only the distinct ones).

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

The square root of 677866 is about 823.3261808056. The cubic root of 677866 is about 87.8445084741.

The spelling of 677866 in words is "six hundred seventy-seven thousand, eight hundred sixty-six".