680877 has 6 divisors (see below), whose sum is σ = 983502. Its totient is φ = 453912.

The previous prime is 680873. The next prime is 680879. The reversal of 680877 is 778086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 594441 + 86436 = 771^2 + 294^2 .

It is not a de Polignac number, because 680877 - 2² = 680873 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 680877.

It is not an unprimeable number, because it can be changed into a prime (680873) 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 5 ways as a sum of consecutive naturals, for example, 37818 + ... + 37835.

It is an arithmetic number, because the mean of its divisors is an integer number (163917).

2⁶⁸⁰⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

680877 is a deficient number, since it is larger than the sum of its proper divisors (302625).

680877 is a wasteful number, since it uses less digits than its factorization.

680877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75659 (or 75656 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 680877 is about 825.1527131386. The cubic root of 680877 is about 87.9743813167.

The spelling of 680877 in words is "six hundred eighty thousand, eight hundred seventy-seven".