106811643 has 4 divisors (see below), whose sum is σ = 142415528. Its totient is φ = 71207760.

The previous prime is 106811633. The next prime is 106811657. The reversal of 106811643 is 346118601.

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

It is not a de Polignac number, because 106811643 - 2⁸ = 106811387 is a prime.

It is a super-2 number, since 2×106811643² = 22817454160718898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106811643.

It is not an unprimeable number, because it can be changed into a prime (106811623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17801938 + ... + 17801943.

It is an arithmetic number, because the mean of its divisors is an integer number (35603882).

Almost surely, 2^106811643 is an apocalyptic number.

106811643 is a deficient number, since it is larger than the sum of its proper divisors (35603885).

106811643 is an equidigital number, since it uses as much as digits as its factorization.

106811643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35603884.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 106811643 is about 10334.9718432127. The cubic root of 106811643 is about 474.4672038915.

The spelling of 106811643 in words is "one hundred six million, eight hundred eleven thousand, six hundred forty-three".