106819 has 4 divisors (see below), whose sum is σ = 109744. Its totient is φ = 103896.

The previous prime is 106801. The next prime is 106823. The reversal of 106819 is 918601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918601 = 367 ⋅2503.

It is not a de Polignac number, because 106819 - 2⁵ = 106787 is a prime.

It is a super-2 number, since 2×106819² = 22820597522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

106819 is a lucky number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 106793 and 106802.

It is not an unprimeable number, because it can be changed into a prime (106859) 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 3 ways as a sum of consecutive naturals, for example, 1407 + ... + 1480.

It is an arithmetic number, because the mean of its divisors is an integer number (27436).

2¹⁰⁶⁸¹⁹ is an apocalyptic number.

106819 is a deficient number, since it is larger than the sum of its proper divisors (2925).

106819 is an equidigital number, since it uses as much as digits as its factorization.

106819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 106819 is about 326.8317610025. The cubic root of 106819 is about 47.4478097133.

The spelling of 106819 in words is "one hundred six thousand, eight hundred nineteen".