676663 has 4 divisors (see below), whose sum is σ = 728728. Its totient is φ = 624600.

The previous prime is 676661. The next prime is 676679. The reversal of 676663 is 366676.

676663 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 676663 - 2¹ = 676661 is a prime.

676663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676661) 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 3 ways as a sum of consecutive naturals, for example, 26013 + ... + 26038.

It is an arithmetic number, because the mean of its divisors is an integer number (182182).

2⁶⁷⁶⁶⁶³ is an apocalyptic number.

676663 is a deficient number, since it is larger than the sum of its proper divisors (52065).

676663 is a wasteful number, since it uses less digits than its factorization.

676663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52064.

The product of its digits is 27216, while the sum is 34.

The square root of 676663 is about 822.5952832347. The cubic root of 676663 is about 87.7925121995.

The spelling of 676663 in words is "six hundred seventy-six thousand, six hundred sixty-three".