677668 has 12 divisors (see below), whose sum is σ = 1193472. Its totient is φ = 336680.

The previous prime is 677657. The next prime is 677681. The reversal of 677668 is 866776.

It is a self number, because there is not a number n which added to its sum of digits gives 677668.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321 + ... + 1207.

It is an arithmetic number, because the mean of its divisors is an integer number (99456).

2⁶⁷⁷⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

677668 is a deficient number, since it is larger than the sum of its proper divisors (515804).

677668 is a wasteful number, since it uses less digits than its factorization.

677668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1080 counting only the distinct ones).

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

The square root of 677668 is about 823.2059280642. The cubic root of 677668 is about 87.8359547154.

The spelling of 677668 in words is "six hundred seventy-seven thousand, six hundred sixty-eight".