676993 has 2 divisors, whose sum is σ = 676994. Its totient is φ = 676992.
The previous prime is 676987. The next prime is 677011. The reversal of 676993 is 399676.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 627264 + 49729 = 792^2 + 223^2 .
It is a cyclic number.
It is not a de Polignac number, because 676993 - 25 = 676961 is a prime.
It is not a weakly prime, because it can be changed into another prime (676903) 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 as a sum of consecutive naturals, namely, 338496 + 338497.
It is an arithmetic number, because the mean of its divisors is an integer number (338497).
2676993 is an apocalyptic number.
It is an amenable number.
676993 is a deficient number, since it is larger than the sum of its proper divisors (1).
676993 is an equidigital number, since it uses as much as digits as its factorization.
676993 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 61236, while the sum is 40.
The square root of 676993 is about 822.7958434509. The cubic root of 676993 is about 87.8067816466.
The spelling of 676993 in words is "six hundred seventy-six thousand, nine hundred ninety-three".
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