676989 has 24 divisors (see below), whose sum is σ = 1067040. Its totient is φ = 412128.

The previous prime is 676987. The next prime is 676993. The reversal of 676989 is 989676.

It is not a de Polignac number, because 676989 - 2¹ = 676987 is a prime.

It is a super-2 number, since 2×676989² = 916628212242, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

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 676989.

It is not an unprimeable number, because it can be changed into a prime (676981) 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 23 ways as a sum of consecutive naturals, for example, 6274 + ... + 6380.

It is an arithmetic number, because the mean of its divisors is an integer number (44460).

2⁶⁷⁶⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

676989 is a deficient number, since it is larger than the sum of its proper divisors (390051).

676989 is a wasteful number, since it uses less digits than its factorization.

676989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 166 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 676989 is about 822.7934127106. The cubic root of 676989 is about 87.8066087114.

It can be divided in two parts, 67 and 6989, that added together give a square (7056 = 84²).

The spelling of 676989 in words is "six hundred seventy-six thousand, nine hundred eighty-nine".