676881 has 6 divisors (see below), whose sum is σ = 977730. Its totient is φ = 451248.

The previous prime is 676861. The next prime is 676883. The reversal of 676881 is 188676.

It can be written as a sum of positive squares in only one way, i.e., 665856 + 11025 = 816^2 + 105^2 .

It is not a de Polignac number, because 676881 - 2¹¹ = 674833 is a prime.

It is a super-2 number, since 2×676881² = 916335776322, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (676883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37596 + ... + 37613.

It is an arithmetic number, because the mean of its divisors is an integer number (162955).

2⁶⁷⁶⁸⁸¹ is an apocalyptic number.

It is an amenable number.

676881 is a deficient number, since it is larger than the sum of its proper divisors (300849).

676881 is a wasteful number, since it uses less digits than its factorization.

676881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75215 (or 75212 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 676881 is about 822.7277800099. The cubic root of 676881 is about 87.8019392027.

The spelling of 676881 in words is "six hundred seventy-six thousand, eight hundred eighty-one".