1679863 has 2 divisors, whose sum is σ = 1679864. Its totient is φ = 1679862.

The previous prime is 1679857. The next prime is 1679903. The reversal of 1679863 is 3689761.

It is an a-pointer prime, because the next prime (1679903) can be obtained adding 1679863 to its sum of digits (40).

It is a weak prime.

It is an emirp because it is prime and its reverse (3689761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1679863 - 2⁵ = 1679831 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839931 + 839932.

It is an arithmetic number, because the mean of its divisors is an integer number (839932).

2^1679863 is an apocalyptic number.

1679863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679863 is an equidigital number, since it uses as much as digits as its factorization.

1679863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 1679863 is about 1296.0952897067. The cubic root of 1679863 is about 118.8752075495.

It can be divided in two parts, 16798 and 63, that added together give a palindrome (16861).

The spelling of 1679863 in words is "one million, six hundred seventy-nine thousand, eight hundred sixty-three".